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iwlwifi: mvm: disallow new TDLS stations when appropriate
[mirror_ubuntu-artful-kernel.git] / drivers / net / wireless / iwlwifi / mvm / mac80211.c
CommitLineData
8ca151b5
JB		 1/******************************************************************************
2 *
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
5 *
6 * GPL LICENSE SUMMARY
7 *
51368bf7 8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
8ca151b5
JB		 9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of version 2 of the GNU General Public License as
12 * published by the Free Software Foundation.
13 *
14 * This program is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
22 * USA
23 *
24 * The full GNU General Public License is included in this distribution
410dc5aa 25 * in the file called COPYING.
8ca151b5
JB		 26 *
27 * Contact Information:
28 * Intel Linux Wireless <ilw@linux.intel.com>
29 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
30 *
31 * BSD LICENSE
32 *
51368bf7 33 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
8ca151b5
JB		 34 * All rights reserved.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
38 * are met:
39 *
40 * * Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * * Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in
44 * the documentation and/or other materials provided with the
45 * distribution.
46 * * Neither the name Intel Corporation nor the names of its
47 * contributors may be used to endorse or promote products derived
48 * from this software without specific prior written permission.
49 *
50 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
51 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
52 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
53 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
54 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
55 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
56 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
57 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
58 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
59 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
60 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
61 *
62 *****************************************************************************/
63#include <linux/kernel.h>
64#include <linux/slab.h>
65#include <linux/skbuff.h>
66#include <linux/netdevice.h>
67#include <linux/etherdevice.h>
f0c2646a 68#include <linux/ip.h>
2ee8f021 69#include <linux/if_arp.h>
8ca151b5 70#include <net/mac80211.h>
7b1dd048 71#include <net/ieee80211_radiotap.h>
f0c2646a 72#include <net/tcp.h>
8ca151b5
JB		 73
74#include "iwl-op-mode.h"
75#include "iwl-io.h"
76#include "mvm.h"
77#include "sta.h"
78#include "time-event.h"
79#include "iwl-eeprom-parse.h"
80#include "fw-api-scan.h"
81#include "iwl-phy-db.h"
507cadf2 82#include "testmode.h"
655e6d6d
EG		 83#include "iwl-fw-error-dump.h"
84#include "iwl-prph.h"
8ca151b5
JB		 85
86static const struct ieee80211_iface_limit iwl_mvm_limits[] = {
87 {
88 .max = 1,
8eb38710 89 .types = BIT(NL80211_IFTYPE_STATION),
8ca151b5 90 },
3c15a0fb
JB		 91 {
92 .max = 1,
8eb38710
IP		 93 .types = BIT(NL80211_IFTYPE_AP) |
94 BIT(NL80211_IFTYPE_P2P_CLIENT) |
3c15a0fb
JB		 95 BIT(NL80211_IFTYPE_P2P_GO),
96 },
97 {
98 .max = 1,
99 .types = BIT(NL80211_IFTYPE_P2P_DEVICE),
100 },
8ca151b5
JB		 101};
102
103static const struct ieee80211_iface_combination iwl_mvm_iface_combinations[] = {
104 {
105 .num_different_channels = 1,
106 .max_interfaces = 3,
107 .limits = iwl_mvm_limits,
108 .n_limits = ARRAY_SIZE(iwl_mvm_limits),
109 },
110};
111
f0c2646a
JB		 112#ifdef CONFIG_PM_SLEEP
113static const struct nl80211_wowlan_tcp_data_token_feature
114iwl_mvm_wowlan_tcp_token_feature = {
115 .min_len = 0,
116 .max_len = 255,
117 .bufsize = IWL_WOWLAN_REMOTE_WAKE_MAX_TOKENS,
118};
119
120static const struct wiphy_wowlan_tcp_support iwl_mvm_wowlan_tcp_support = {
121 .tok = &iwl_mvm_wowlan_tcp_token_feature,
122 .data_payload_max = IWL_WOWLAN_TCP_MAX_PACKET_LEN -
123 sizeof(struct ethhdr) -
124 sizeof(struct iphdr) -
125 sizeof(struct tcphdr),
126 .data_interval_max = 65535, /* __le16 in API */
127 .wake_payload_max = IWL_WOWLAN_REMOTE_WAKE_MAX_PACKET_LEN -
128 sizeof(struct ethhdr) -
129 sizeof(struct iphdr) -
130 sizeof(struct tcphdr),
131 .seq = true,
132};
133#endif
134
77736923 135#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
2ee8f021
EP		 136/*
137 * Use the reserved field to indicate magic values.
138 * these values will only be used internally by the driver,
139 * and won't make it to the fw (reserved will be 0).
140 * BC_FILTER_MAGIC_IP - configure the val of this attribute to
141 * be the vif's ip address. in case there is not a single
142 * ip address (0, or more than 1), this attribute will
143 * be skipped.
144 * BC_FILTER_MAGIC_MAC - set the val of this attribute to
145 * the LSB bytes of the vif's mac address
146 */
147enum {
148 BC_FILTER_MAGIC_NONE = 0,
149 BC_FILTER_MAGIC_IP,
150 BC_FILTER_MAGIC_MAC,
151};
152
77736923
EP		 153static const struct iwl_fw_bcast_filter iwl_mvm_default_bcast_filters[] = {
154 {
155 /* arp */
156 .discard = 0,
157 .frame_type = BCAST_FILTER_FRAME_TYPE_ALL,
158 .attrs = {
159 {
160 /* frame type - arp, hw type - ethernet */
161 .offset_type =
162 BCAST_FILTER_OFFSET_PAYLOAD_START,
163 .offset = sizeof(rfc1042_header),
164 .val = cpu_to_be32(0x08060001),
165 .mask = cpu_to_be32(0xffffffff),
166 },
2ee8f021
EP		 167 {
168 /* arp dest ip */
169 .offset_type =
170 BCAST_FILTER_OFFSET_PAYLOAD_START,
171 .offset = sizeof(rfc1042_header) + 2 +
172 sizeof(struct arphdr) +
173 ETH_ALEN + sizeof(__be32) +
174 ETH_ALEN,
175 .mask = cpu_to_be32(0xffffffff),
176 /* mark it as special field */
177 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_IP),
178 },
179 },
180 },
181 {
182 /* dhcp offer bcast */
183 .discard = 0,
184 .frame_type = BCAST_FILTER_FRAME_TYPE_IPV4,
185 .attrs = {
186 {
187 /* udp dest port - 68 (bootp client)*/
188 .offset_type = BCAST_FILTER_OFFSET_IP_END,
189 .offset = offsetof(struct udphdr, dest),
190 .val = cpu_to_be32(0x00440000),
191 .mask = cpu_to_be32(0xffff0000),
192 },
193 {
194 /* dhcp - lsb bytes of client hw address */
195 .offset_type = BCAST_FILTER_OFFSET_IP_END,
196 .offset = 38,
197 .mask = cpu_to_be32(0xffffffff),
198 /* mark it as special field */
199 .reserved1 = cpu_to_le16(BC_FILTER_MAGIC_MAC),
200 },
77736923
EP		 201 },
202 },
203 /* last filter must be empty */
204 {},
205};
206#endif
207
7498cf4c
EP		 208void iwl_mvm_ref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
209{
7bb426ea 210 if (!iwl_mvm_is_d0i3_supported(mvm))
7498cf4c
EP		 211 return;
212
213 IWL_DEBUG_RPM(mvm, "Take mvm reference - type %d\n", ref_type);
214 WARN_ON(test_and_set_bit(ref_type, mvm->ref_bitmap));
215 iwl_trans_ref(mvm->trans);
216}
217
218void iwl_mvm_unref(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
219{
7bb426ea 220 if (!iwl_mvm_is_d0i3_supported(mvm))
7498cf4c
EP		 221 return;
222
223 IWL_DEBUG_RPM(mvm, "Leave mvm reference - type %d\n", ref_type);
224 WARN_ON(!test_and_clear_bit(ref_type, mvm->ref_bitmap));
225 iwl_trans_unref(mvm->trans);
226}
227
228static void
229iwl_mvm_unref_all_except(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref)
230{
231 int i;
232
7bb426ea 233 if (!iwl_mvm_is_d0i3_supported(mvm))
7498cf4c
EP		 234 return;
235
236 for_each_set_bit(i, mvm->ref_bitmap, IWL_MVM_REF_COUNT) {
237 if (ref == i)
238 continue;
239
240 IWL_DEBUG_RPM(mvm, "Cleanup: remove mvm ref type %d\n", i);
241 clear_bit(i, mvm->ref_bitmap);
242 iwl_trans_unref(mvm->trans);
243 }
244}
245
d40fc489
GG		 246static int iwl_mvm_ref_sync(struct iwl_mvm *mvm, enum iwl_mvm_ref_type ref_type)
247{
248 iwl_mvm_ref(mvm, ref_type);
249
250 if (!wait_event_timeout(mvm->d0i3_exit_waitq,
251 !test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status),
252 HZ)) {
253 WARN_ON_ONCE(1);
254 iwl_mvm_unref(mvm, ref_type);
255 return -EIO;
256 }
257
258 return 0;
259}
260
fe0f2de3
IP		 261static void iwl_mvm_reset_phy_ctxts(struct iwl_mvm *mvm)
262{
263 int i;
264
265 memset(mvm->phy_ctxts, 0, sizeof(mvm->phy_ctxts));
266 for (i = 0; i < NUM_PHY_CTX; i++) {
267 mvm->phy_ctxts[i].id = i;
268 mvm->phy_ctxts[i].ref = 0;
269 }
270}
271
20f1a5de
DS		 272static int iwl_mvm_max_scan_ie_len(struct iwl_mvm *mvm)
273{
274 /* we create the 802.11 header and SSID element */
275 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_NO_BASIC_SSID)
276 return mvm->fw->ucode_capa.max_probe_length - 24 - 2;
277 return mvm->fw->ucode_capa.max_probe_length - 24 - 34;
278}
279
8ca151b5
JB		 280int iwl_mvm_mac_setup_register(struct iwl_mvm *mvm)
281{
282 struct ieee80211_hw *hw = mvm->hw;
831e85f3 283 int num_mac, ret, i;
8ca151b5
JB		 284
285 /* Tell mac80211 our characteristics */
286 hw->flags = IEEE80211_HW_SIGNAL_DBM |
287 IEEE80211_HW_SPECTRUM_MGMT |
288 IEEE80211_HW_REPORTS_TX_ACK_STATUS |
289 IEEE80211_HW_QUEUE_CONTROL |
290 IEEE80211_HW_WANT_MONITOR_VIF |
8ca151b5
JB		 291 IEEE80211_HW_SUPPORTS_PS |
292 IEEE80211_HW_SUPPORTS_DYNAMIC_PS |
d2931bbd 293 IEEE80211_HW_AMPDU_AGGREGATION |
d64048ed 294 IEEE80211_HW_TIMING_BEACON_ONLY |
147fc9be 295 IEEE80211_HW_CONNECTION_MONITOR |
f0c97783 296 IEEE80211_HW_CHANCTX_STA_CSA |
147fc9be 297 IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
e8e626ad 298 IEEE80211_HW_SUPPORTS_STATIC_SMPS;
8ca151b5 299
19e737c9 300 hw->queues = mvm->first_agg_queue;
398e8c6c 301 hw->offchannel_tx_hw_queue = IWL_MVM_OFFCHANNEL_QUEUE;
7b1dd048
EG		 302 hw->radiotap_mcs_details |= IEEE80211_RADIOTAP_MCS_HAVE_FEC |
303 IEEE80211_RADIOTAP_MCS_HAVE_STBC;
304 hw->radiotap_vht_details |= IEEE80211_RADIOTAP_VHT_KNOWN_STBC;
8ca151b5
JB		 305 hw->rate_control_algorithm = "iwl-mvm-rs";
306
307 /*
308 * Enable 11w if advertised by firmware and software crypto
309 * is not enabled (as the firmware will interpret some mgmt
310 * packets, so enabling it with software crypto isn't safe)
311 */
312 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_MFP &&
313 !iwlwifi_mod_params.sw_crypto)
314 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
315
1504f48d
MC		 316 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT &&
317 IWL_UCODE_API(mvm->fw->ucode_ver) >= 9 &&
318 !iwlwifi_mod_params.uapsd_disable) {
319 hw->flags |= IEEE80211_HW_SUPPORTS_UAPSD;
320 hw->uapsd_queues = IWL_UAPSD_AC_INFO;
321 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
322 }
e8e626ad 323
a42c9fcc
AN		 324 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_UAPSD_SUPPORT &&
325 !iwlwifi_mod_params.uapsd_disable) {
326 hw->flags |= IEEE80211_HW_SUPPORTS_UAPSD;
327 hw->uapsd_queues = IWL_UAPSD_AC_INFO;
328 hw->uapsd_max_sp_len = IWL_UAPSD_MAX_SP;
329 }
e8e626ad 330
fb98be5e
DS		 331 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
332 hw->flags |= IEEE80211_SINGLE_HW_SCAN_ON_ALL_BANDS;
333
8ca151b5
JB		 334 hw->sta_data_size = sizeof(struct iwl_mvm_sta);
335 hw->vif_data_size = sizeof(struct iwl_mvm_vif);
fe0f2de3 336 hw->chanctx_data_size = sizeof(u16);
8ca151b5
JB		 337
338 hw->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
3c15a0fb
JB		 339 BIT(NL80211_IFTYPE_P2P_CLIENT) |
340 BIT(NL80211_IFTYPE_AP) |
341 BIT(NL80211_IFTYPE_P2P_GO) |
c13b1725
EG		 342 BIT(NL80211_IFTYPE_P2P_DEVICE) |
343 BIT(NL80211_IFTYPE_ADHOC);
5023d966 344
a2f73b6c
LR		 345 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
346 hw->wiphy->regulatory_flags |= REGULATORY_CUSTOM_REG |
347 REGULATORY_DISABLE_BEACON_HINTS;
8ca151b5 348
3e56eadf
JB		 349 if (mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_GO_UAPSD)
350 hw->wiphy->flags |= WIPHY_FLAG_AP_UAPSD;
351
bd3398e2
AO		 352 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_CSA_FLOW)
353 hw->wiphy->flags |= WIPHY_FLAG_HAS_CHANNEL_SWITCH;
354
8ca151b5
JB		 355 hw->wiphy->iface_combinations = iwl_mvm_iface_combinations;
356 hw->wiphy->n_iface_combinations =
357 ARRAY_SIZE(iwl_mvm_iface_combinations);
358
c451e6d4 359 hw->wiphy->max_remain_on_channel_duration = 10000;
8ca151b5
JB		 360 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
361
362 /* Extract MAC address */
363 memcpy(mvm->addresses[0].addr, mvm->nvm_data->hw_addr, ETH_ALEN);
364 hw->wiphy->addresses = mvm->addresses;
365 hw->wiphy->n_addresses = 1;
831e85f3
IP		 366
367 /* Extract additional MAC addresses if available */
368 num_mac = (mvm->nvm_data->n_hw_addrs > 1) ?
369 min(IWL_MVM_MAX_ADDRESSES, mvm->nvm_data->n_hw_addrs) : 1;
370
371 for (i = 1; i < num_mac; i++) {
372 memcpy(mvm->addresses[i].addr, mvm->addresses[i-1].addr,
8ca151b5 373 ETH_ALEN);
831e85f3 374 mvm->addresses[i].addr[5]++;
8ca151b5
JB		 375 hw->wiphy->n_addresses++;
376 }
377
fe0f2de3
IP		 378 iwl_mvm_reset_phy_ctxts(mvm);
379
20f1a5de
DS		 380 hw->wiphy->max_scan_ie_len = iwl_mvm_max_scan_ie_len(mvm);
381
8ca151b5
JB		 382 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
383
384 if (mvm->nvm_data->bands[IEEE80211_BAND_2GHZ].n_channels)
385 hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
386 &mvm->nvm_data->bands[IEEE80211_BAND_2GHZ];
387 if (mvm->nvm_data->bands[IEEE80211_BAND_5GHZ].n_channels)
388 hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
389 &mvm->nvm_data->bands[IEEE80211_BAND_5GHZ];
390
391 hw->wiphy->hw_version = mvm->trans->hw_id;
392
ade50652 393 if (iwlmvm_mod_params.power_scheme != IWL_POWER_SCHEME_CAM)
8ca151b5
JB		 394 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
395 else
396 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
397
536a3eee
EG		 398 hw->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
399 hw->wiphy->max_sched_scan_ssids = PROBE_OPTION_MAX;
400 hw->wiphy->max_match_sets = IWL_SCAN_MAX_PROFILES;
401 /* we create the 802.11 header and zero length SSID IE. */
402 hw->wiphy->max_sched_scan_ie_len = SCAN_OFFLOAD_PROBE_REQ_SIZE - 24 - 2;
35a000b7 403
8ca151b5 404 hw->wiphy->features |= NL80211_FEATURE_P2P_GO_CTWIN |
ab480030 405 NL80211_FEATURE_LOW_PRIORITY_SCAN |
8a110d9b 406 NL80211_FEATURE_P2P_GO_OPPPS;
8ca151b5
JB		 407
408 mvm->rts_threshold = IEEE80211_MAX_RTS_THRESHOLD;
409
e36e5433 410 /* currently FW API supports only one optional cipher scheme */
9ddca860 411 if (mvm->fw->cs[0].cipher) {
e36e5433 412 mvm->hw->n_cipher_schemes = 1;
9ddca860 413 mvm->hw->cipher_schemes = &mvm->fw->cs[0];
e36e5433
MS		 414 }
415
8ca151b5 416#ifdef CONFIG_PM_SLEEP
d15a747f
EP		 417 if (iwl_mvm_is_d0i3_supported(mvm) &&
418 device_can_wakeup(mvm->trans->dev)) {
419 mvm->wowlan.flags = WIPHY_WOWLAN_ANY;
420 hw->wiphy->wowlan = &mvm->wowlan;
421 } else if (mvm->fw->img[IWL_UCODE_WOWLAN].sec[0].len &&
8ca151b5
JB		 422 mvm->trans->ops->d3_suspend &&
423 mvm->trans->ops->d3_resume &&
424 device_can_wakeup(mvm->trans->dev)) {
964dc9e2
JB		 425 mvm->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
426 WIPHY_WOWLAN_DISCONNECT |
427 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
428 WIPHY_WOWLAN_RFKILL_RELEASE;
8ca151b5 429 if (!iwlwifi_mod_params.sw_crypto)
964dc9e2
JB		 430 mvm->wowlan.flags |= WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
431 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
432 WIPHY_WOWLAN_4WAY_HANDSHAKE;
433
434 mvm->wowlan.n_patterns = IWL_WOWLAN_MAX_PATTERNS;
435 mvm->wowlan.pattern_min_len = IWL_WOWLAN_MIN_PATTERN_LEN;
436 mvm->wowlan.pattern_max_len = IWL_WOWLAN_MAX_PATTERN_LEN;
437 mvm->wowlan.tcp = &iwl_mvm_wowlan_tcp_support;
438 hw->wiphy->wowlan = &mvm->wowlan;
8ca151b5
JB		 439 }
440#endif
441
77736923
EP		 442#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
443 /* assign default bcast filtering configuration */
444 mvm->bcast_filters = iwl_mvm_default_bcast_filters;
445#endif
446
8ca151b5
JB		 447 ret = iwl_mvm_leds_init(mvm);
448 if (ret)
449 return ret;
450
b7327d89
EG		 451 ret = ieee80211_register_hw(mvm->hw);
452 if (ret)
453 iwl_mvm_leds_exit(mvm);
454
455 return ret;
8ca151b5
JB		 456}
457
b2492501
AN		 458static bool iwl_mvm_defer_tx(struct iwl_mvm *mvm,
459 struct ieee80211_sta *sta,
460 struct sk_buff *skb)
461{
462 struct iwl_mvm_sta *mvmsta;
463 bool defer = false;
464
465 /*
466 * double check the IN_D0I3 flag both before and after
467 * taking the spinlock, in order to prevent taking
468 * the spinlock when not needed.
469 */
470 if (likely(!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status)))
471 return false;
472
473 spin_lock(&mvm->d0i3_tx_lock);
474 /*
475 * testing the flag again ensures the skb dequeue
476 * loop (on d0i3 exit) hasn't run yet.
477 */
478 if (!test_bit(IWL_MVM_STATUS_IN_D0I3, &mvm->status))
479 goto out;
480
481 mvmsta = iwl_mvm_sta_from_mac80211(sta);
482 if (mvmsta->sta_id == IWL_MVM_STATION_COUNT ||
483 mvmsta->sta_id != mvm->d0i3_ap_sta_id)
484 goto out;
485
486 __skb_queue_tail(&mvm->d0i3_tx, skb);
487 ieee80211_stop_queues(mvm->hw);
488
489 /* trigger wakeup */
490 iwl_mvm_ref(mvm, IWL_MVM_REF_TX);
491 iwl_mvm_unref(mvm, IWL_MVM_REF_TX);
492
493 defer = true;
494out:
495 spin_unlock(&mvm->d0i3_tx_lock);
496 return defer;
497}
498
8ca151b5
JB		 499static void iwl_mvm_mac_tx(struct ieee80211_hw *hw,
500 struct ieee80211_tx_control *control,
501 struct sk_buff *skb)
502{
503 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
3e56eadf
JB		 504 struct ieee80211_sta *sta = control->sta;
505 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
506 struct ieee80211_hdr *hdr = (void *)skb->data;
8ca151b5 507
9ee718aa
EL		 508 if (iwl_mvm_is_radio_killed(mvm)) {
509 IWL_DEBUG_DROP(mvm, "Dropping - RF/CT KILL\n");
8ca151b5
JB		 510 goto drop;
511 }
512
398e8c6c 513 if (IEEE80211_SKB_CB(skb)->hw_queue == IWL_MVM_OFFCHANNEL_QUEUE &&
8ca151b5
JB		 514 !test_bit(IWL_MVM_STATUS_ROC_RUNNING, &mvm->status))
515 goto drop;
516
3e56eadf
JB		 517 /* treat non-bufferable MMPDUs as broadcast if sta is sleeping */
518 if (unlikely(info->flags & IEEE80211_TX_CTL_NO_PS_BUFFER &&
519 ieee80211_is_mgmt(hdr->frame_control) &&
520 !ieee80211_is_deauth(hdr->frame_control) &&
521 !ieee80211_is_disassoc(hdr->frame_control) &&
522 !ieee80211_is_action(hdr->frame_control)))
523 sta = NULL;
524
525 if (sta) {
b2492501
AN		 526 if (iwl_mvm_defer_tx(mvm, sta, skb))
527 return;
3e56eadf 528 if (iwl_mvm_tx_skb(mvm, skb, sta))
8ca151b5
JB		 529 goto drop;
530 return;
531 }
532
533 if (iwl_mvm_tx_skb_non_sta(mvm, skb))
534 goto drop;
535 return;
536 drop:
537 ieee80211_free_txskb(hw, skb);
538}
539
205e2210
EG		 540static inline bool iwl_enable_rx_ampdu(const struct iwl_cfg *cfg)
541{
542 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_RXAGG)
543 return false;
544 return true;
545}
546
547static inline bool iwl_enable_tx_ampdu(const struct iwl_cfg *cfg)
548{
549 if (iwlwifi_mod_params.disable_11n & IWL_DISABLE_HT_TXAGG)
550 return false;
551 if (iwlwifi_mod_params.disable_11n & IWL_ENABLE_HT_TXAGG)
552 return true;
553
554 /* enabled by default */
555 return true;
556}
557
8ca151b5
JB		 558static int iwl_mvm_mac_ampdu_action(struct ieee80211_hw *hw,
559 struct ieee80211_vif *vif,
560 enum ieee80211_ampdu_mlme_action action,
561 struct ieee80211_sta *sta, u16 tid,
562 u16 *ssn, u8 buf_size)
563{
564 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
565 int ret;
b2492501 566 bool tx_agg_ref = false;
8ca151b5
JB		 567
568 IWL_DEBUG_HT(mvm, "A-MPDU action on addr %pM tid %d: action %d\n",
569 sta->addr, tid, action);
570
571 if (!(mvm->nvm_data->sku_cap_11n_enable))
572 return -EACCES;
573
b2492501 574 /* return from D0i3 before starting a new Tx aggregation */
9256c205
EP		 575 switch (action) {
576 case IEEE80211_AMPDU_TX_START:
577 case IEEE80211_AMPDU_TX_STOP_CONT:
578 case IEEE80211_AMPDU_TX_STOP_FLUSH:
579 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
580 case IEEE80211_AMPDU_TX_OPERATIONAL:
b2492501 581 /*
9256c205
EP		 582 * for tx start, wait synchronously until D0i3 exit to
583 * get the correct sequence number for the tid.
584 * additionally, some other ampdu actions use direct
585 * target access, which is not handled automatically
586 * by the trans layer (unlike commands), so wait for
587 * d0i3 exit in these cases as well.
b2492501 588 */
d40fc489
GG		 589 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_TX_AGG);
590 if (ret)
591 return ret;
592
593 tx_agg_ref = true;
9256c205
EP		 594 break;
595 default:
596 break;
b2492501
AN		 597 }
598
8ca151b5
JB		 599 mutex_lock(&mvm->mutex);
600
601 switch (action) {
602 case IEEE80211_AMPDU_RX_START:
205e2210 603 if (!iwl_enable_rx_ampdu(mvm->cfg)) {
8ca151b5
JB		 604 ret = -EINVAL;
605 break;
606 }
607 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, *ssn, true);
608 break;
609 case IEEE80211_AMPDU_RX_STOP:
610 ret = iwl_mvm_sta_rx_agg(mvm, sta, tid, 0, false);
611 break;
612 case IEEE80211_AMPDU_TX_START:
205e2210 613 if (!iwl_enable_tx_ampdu(mvm->cfg)) {
5d158efa
EG		 614 ret = -EINVAL;
615 break;
616 }
8ca151b5
JB		 617 ret = iwl_mvm_sta_tx_agg_start(mvm, vif, sta, tid, ssn);
618 break;
619 case IEEE80211_AMPDU_TX_STOP_CONT:
e3d9e7ce
EG		 620 ret = iwl_mvm_sta_tx_agg_stop(mvm, vif, sta, tid);
621 break;
8ca151b5
JB		 622 case IEEE80211_AMPDU_TX_STOP_FLUSH:
623 case IEEE80211_AMPDU_TX_STOP_FLUSH_CONT:
e3d9e7ce 624 ret = iwl_mvm_sta_tx_agg_flush(mvm, vif, sta, tid);
8ca151b5
JB		 625 break;
626 case IEEE80211_AMPDU_TX_OPERATIONAL:
627 ret = iwl_mvm_sta_tx_agg_oper(mvm, vif, sta, tid, buf_size);
628 break;
629 default:
630 WARN_ON_ONCE(1);
631 ret = -EINVAL;
632 break;
633 }
634 mutex_unlock(&mvm->mutex);
635
b2492501
AN		 636 /*
637 * If the tid is marked as started, we won't use it for offloaded
638 * traffic on the next D0i3 entry. It's safe to unref.
639 */
640 if (tx_agg_ref)
641 iwl_mvm_unref(mvm, IWL_MVM_REF_TX_AGG);
642
8ca151b5
JB		 643 return ret;
644}
645
646static void iwl_mvm_cleanup_iterator(void *data, u8 *mac,
647 struct ieee80211_vif *vif)
648{
649 struct iwl_mvm *mvm = data;
650 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
651
652 mvmvif->uploaded = false;
653 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
654
655 /* does this make sense at all? */
656 mvmvif->color++;
657
658 spin_lock_bh(&mvm->time_event_lock);
659 iwl_mvm_te_clear_data(mvm, &mvmvif->time_event_data);
660 spin_unlock_bh(&mvm->time_event_lock);
661
fe0f2de3 662 mvmvif->phy_ctxt = NULL;
8ca151b5
JB		 663}
664
655e6d6d
EG		 665#ifdef CONFIG_IWLWIFI_DEBUGFS
666static void iwl_mvm_fw_error_dump(struct iwl_mvm *mvm)
667{
668 struct iwl_fw_error_dump_file *dump_file;
669 struct iwl_fw_error_dump_data *dump_data;
670 struct iwl_fw_error_dump_info *dump_info;
671 const struct fw_img *img;
672 u32 sram_len, sram_ofs;
673 u32 file_len, rxf_len;
674 unsigned long flags;
675 u32 trans_len;
676 int reg_val;
677
678 lockdep_assert_held(&mvm->mutex);
679
680 if (mvm->fw_error_dump)
681 return;
682
683 img = &mvm->fw->img[mvm->cur_ucode];
684 sram_ofs = img->sec[IWL_UCODE_SECTION_DATA].offset;
685 sram_len = img->sec[IWL_UCODE_SECTION_DATA].len;
686
687 /* reading buffer size */
688 reg_val = iwl_trans_read_prph(mvm->trans, RXF_SIZE_ADDR);
689 rxf_len = (reg_val & RXF_SIZE_BYTE_CNT_MSK) >> RXF_SIZE_BYTE_CND_POS;
690
691 /* the register holds the value divided by 128 */
692 rxf_len = rxf_len << 7;
693
694 file_len = sizeof(*dump_file) +
695 sizeof(*dump_data) * 3 +
696 sram_len +
697 rxf_len +
698 sizeof(*dump_info);
699
700 trans_len = iwl_trans_dump_data(mvm->trans, NULL, 0);
701 if (trans_len)
702 file_len += trans_len;
703
5bfe6f53 704 dump_file = vzalloc(file_len);
655e6d6d
EG		 705 if (!dump_file)
706 return;
707
708 mvm->fw_error_dump = dump_file;
709
710 dump_file->barker = cpu_to_le32(IWL_FW_ERROR_DUMP_BARKER);
711 dump_file->file_len = cpu_to_le32(file_len);
712 dump_data = (void *)dump_file->data;
713
714 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_DEV_FW_INFO);
715 dump_data->len = cpu_to_le32(sizeof(*dump_info));
716 dump_info = (void *) dump_data->data;
717 dump_info->device_family =
718 mvm->cfg->device_family == IWL_DEVICE_FAMILY_7000 ?
719 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_7) :
720 cpu_to_le32(IWL_FW_ERROR_DUMP_FAMILY_8);
721 memcpy(dump_info->fw_human_readable, mvm->fw->human_readable,
722 sizeof(dump_info->fw_human_readable));
723 strncpy(dump_info->dev_human_readable, mvm->cfg->name,
724 sizeof(dump_info->dev_human_readable));
725 strncpy(dump_info->bus_human_readable, mvm->dev->bus->name,
726 sizeof(dump_info->bus_human_readable));
727
728 dump_data = iwl_fw_error_next_data(dump_data);
729 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_RXF);
730 dump_data->len = cpu_to_le32(rxf_len);
731
732 if (iwl_trans_grab_nic_access(mvm->trans, false, &flags)) {
733 u32 *rxf = (void *)dump_data->data;
734 int i;
735
736 for (i = 0; i < (rxf_len / sizeof(u32)); i++) {
737 iwl_trans_write_prph(mvm->trans,
738 RXF_LD_FENCE_OFFSET_ADDR,
739 i * sizeof(u32));
740 rxf[i] = iwl_trans_read_prph(mvm->trans,
741 RXF_FIFO_RD_FENCE_ADDR);
742 }
743 iwl_trans_release_nic_access(mvm->trans, &flags);
744 }
745
746 dump_data = iwl_fw_error_next_data(dump_data);
747 dump_data->type = cpu_to_le32(IWL_FW_ERROR_DUMP_SRAM);
748 dump_data->len = cpu_to_le32(sram_len);
749 iwl_trans_read_mem_bytes(mvm->trans, sram_ofs, dump_data->data,
750 sram_len);
751
752 if (trans_len) {
753 void *buf = iwl_fw_error_next_data(dump_data);
754 u32 real_trans_len = iwl_trans_dump_data(mvm->trans, buf,
755 trans_len);
756 dump_data = (void *)((u8 *)buf + real_trans_len);
757 dump_file->file_len =
758 cpu_to_le32(file_len - trans_len + real_trans_len);
759 }
760}
761#endif
762
8ca151b5
JB		 763static void iwl_mvm_restart_cleanup(struct iwl_mvm *mvm)
764{
1bd3cbc1
EG		 765#ifdef CONFIG_IWLWIFI_DEBUGFS
766 static char *env[] = { "DRIVER=iwlwifi", "EVENT=error_dump", NULL };
767
768 iwl_mvm_fw_error_dump(mvm);
769
770 /* notify the userspace about the error we had */
771 kobject_uevent_env(&mvm->hw->wiphy->dev.kobj, KOBJ_CHANGE, env);
772#endif
773
8ca151b5 774 iwl_trans_stop_device(mvm->trans);
8ca151b5
JB		 775
776 mvm->scan_status = IWL_MVM_SCAN_NONE;
777
778 /* just in case one was running */
779 ieee80211_remain_on_channel_expired(mvm->hw);
780
781 ieee80211_iterate_active_interfaces_atomic(
782 mvm->hw, IEEE80211_IFACE_ITER_RESUME_ALL,
783 iwl_mvm_cleanup_iterator, mvm);
784
fe0f2de3 785 mvm->p2p_device_vif = NULL;
37577fe2 786 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
fe0f2de3
IP		 787
788 iwl_mvm_reset_phy_ctxts(mvm);
8ca151b5
JB		 789 memset(mvm->fw_key_table, 0, sizeof(mvm->fw_key_table));
790 memset(mvm->sta_drained, 0, sizeof(mvm->sta_drained));
791
792 ieee80211_wake_queues(mvm->hw);
793
7498cf4c
EP		 794 /* cleanup all stale references (scan, roc), but keep the
795 * ucode_down ref until reconfig is complete */
796 iwl_mvm_unref_all_except(mvm, IWL_MVM_REF_UCODE_DOWN);
797
8ca151b5 798 mvm->vif_count = 0;
113a0447 799 mvm->rx_ba_sessions = 0;
8ca151b5
JB		 800}
801
802static int iwl_mvm_mac_start(struct ieee80211_hw *hw)
803{
804 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
805 int ret;
806
807 mutex_lock(&mvm->mutex);
808
809 /* Clean up some internal and mac80211 state on restart */
810 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status))
811 iwl_mvm_restart_cleanup(mvm);
812
813 ret = iwl_mvm_up(mvm);
c47af22a
JB		 814
815 if (ret && test_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status)) {
816 /* Something went wrong - we need to finish some cleanup
817 * that normally iwl_mvm_mac_restart_complete() below
818 * would do.
819 */
820 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
821 iwl_mvm_d0i3_enable_tx(mvm, NULL);
822 }
823
8ca151b5
JB		 824 mutex_unlock(&mvm->mutex);
825
826 return ret;
827}
828
829static void iwl_mvm_mac_restart_complete(struct ieee80211_hw *hw)
830{
831 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
832 int ret;
833
834 mutex_lock(&mvm->mutex);
835
836 clear_bit(IWL_MVM_STATUS_IN_HW_RESTART, &mvm->status);
b2492501 837 iwl_mvm_d0i3_enable_tx(mvm, NULL);
0166230c 838 ret = iwl_mvm_update_quotas(mvm, NULL);
8ca151b5
JB		 839 if (ret)
840 IWL_ERR(mvm, "Failed to update quotas after restart (%d)\n",
841 ret);
842
7498cf4c
EP		 843 /* allow transport/FW low power modes */
844 iwl_mvm_unref(mvm, IWL_MVM_REF_UCODE_DOWN);
845
8ca151b5
JB		 846 mutex_unlock(&mvm->mutex);
847}
848
849static void iwl_mvm_mac_stop(struct ieee80211_hw *hw)
850{
851 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
852
37577fe2 853 flush_work(&mvm->d0i3_exit_work);
8ca151b5
JB		 854 flush_work(&mvm->async_handlers_wk);
855
856 mutex_lock(&mvm->mutex);
7498cf4c
EP		 857
858 /* disallow low power states when the FW is down */
859 iwl_mvm_ref(mvm, IWL_MVM_REF_UCODE_DOWN);
860
8ca151b5
JB		 861 /* async_handlers_wk is now blocked */
862
863 /*
864 * The work item could be running or queued if the
865 * ROC time event stops just as we get here.
866 */
867 cancel_work_sync(&mvm->roc_done_wk);
868
869 iwl_trans_stop_device(mvm->trans);
8ca151b5
JB		 870
871 iwl_mvm_async_handlers_purge(mvm);
872 /* async_handlers_list is empty and will stay empty: HW is stopped */
873
874 /* the fw is stopped, the aux sta is dead: clean up driver state */
875 iwl_mvm_dealloc_int_sta(mvm, &mvm->aux_sta);
876
877 mutex_unlock(&mvm->mutex);
878
879 /*
880 * The worker might have been waiting for the mutex, let it run and
881 * discover that its list is now empty.
882 */
883 cancel_work_sync(&mvm->async_handlers_wk);
884}
885
fe0f2de3
IP		 886static struct iwl_mvm_phy_ctxt *iwl_mvm_get_free_phy_ctxt(struct iwl_mvm *mvm)
887{
888 u16 i;
889
890 lockdep_assert_held(&mvm->mutex);
891
892 for (i = 0; i < NUM_PHY_CTX; i++)
893 if (!mvm->phy_ctxts[i].ref)
894 return &mvm->phy_ctxts[i];
895
896 IWL_ERR(mvm, "No available PHY context\n");
897 return NULL;
898}
899
ee9c6cb0
EG		 900static int iwl_mvm_set_tx_power(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
901 s8 tx_power)
902{
903 /* FW is in charge of regulatory enforcement */
904 struct iwl_reduce_tx_power_cmd reduce_txpwr_cmd = {
905 .mac_context_id = iwl_mvm_vif_from_mac80211(vif)->id,
906 .pwr_restriction = cpu_to_le16(tx_power),
907 };
908
a1022927 909 return iwl_mvm_send_cmd_pdu(mvm, REDUCE_TX_POWER_CMD, 0,
ee9c6cb0
EG		 910 sizeof(reduce_txpwr_cmd),
911 &reduce_txpwr_cmd);
912}
913
8ca151b5
JB		 914static int iwl_mvm_mac_add_interface(struct ieee80211_hw *hw,
915 struct ieee80211_vif *vif)
916{
917 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
918 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
919 int ret;
920
d40fc489
GG		 921 /*
922 * make sure D0i3 exit is completed, otherwise a target access
923 * during tx queue configuration could be done when still in
924 * D0i3 state.
925 */
926 ret = iwl_mvm_ref_sync(mvm, IWL_MVM_REF_ADD_IF);
927 if (ret)
928 return ret;
929
8ca151b5
JB		 930 /*
931 * Not much to do here. The stack will not allow interface
932 * types or combinations that we didn't advertise, so we
933 * don't really have to check the types.
934 */
935
936 mutex_lock(&mvm->mutex);
937
e89044d7 938 /* Allocate resources for the MAC context, and add it to the fw */
8ca151b5
JB		 939 ret = iwl_mvm_mac_ctxt_init(mvm, vif);
940 if (ret)
941 goto out_unlock;
942
1c2abf72 943 /* Counting number of interfaces is needed for legacy PM */
ea183d02
IP		 944 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
945 mvm->vif_count++;
ea183d02 946
8ca151b5
JB		 947 /*
948 * The AP binding flow can be done only after the beacon
949 * template is configured (which happens only in the mac80211
950 * start_ap() flow), and adding the broadcast station can happen
951 * only after the binding.
952 * In addition, since modifying the MAC before adding a bcast
953 * station is not allowed by the FW, delay the adding of MAC context to
954 * the point where we can also add the bcast station.
955 * In short: there's not much we can do at this point, other than
956 * allocating resources :)
957 */
5023d966
JB		 958 if (vif->type == NL80211_IFTYPE_AP ||
959 vif->type == NL80211_IFTYPE_ADHOC) {
8ca151b5
JB		 960 u32 qmask = iwl_mvm_mac_get_queues_mask(mvm, vif);
961 ret = iwl_mvm_allocate_int_sta(mvm, &mvmvif->bcast_sta,
b92e661b
EP		 962 qmask,
963 ieee80211_vif_type_p2p(vif));
8ca151b5
JB		 964 if (ret) {
965 IWL_ERR(mvm, "Failed to allocate bcast sta\n");
966 goto out_release;
967 }
968
77740cb4 969 iwl_mvm_vif_dbgfs_register(mvm, vif);
8ca151b5
JB		 970 goto out_unlock;
971 }
972
8ca151b5
JB		 973 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
974 if (ret)
975 goto out_release;
976
999609f1 977 ret = iwl_mvm_power_update_mac(mvm);
e5e7aa8e
EG		 978 if (ret)
979 goto out_release;
8ca151b5 980
7df15b1e 981 /* beacon filtering */
a1022927 982 ret = iwl_mvm_disable_beacon_filter(mvm, vif, 0);
bd3351ba
EP		 983 if (ret)
984 goto out_remove_mac;
985
7df15b1e 986 if (!mvm->bf_allowed_vif &&
73e5f2c5 987 vif->type == NL80211_IFTYPE_STATION && !vif->p2p) {
7df15b1e 988 mvm->bf_allowed_vif = mvmvif;
a20fd398
AO		 989 vif->driver_flags |= IEEE80211_VIF_BEACON_FILTER |
990 IEEE80211_VIF_SUPPORTS_CQM_RSSI;
7df15b1e
HG		 991 }
992
8ca151b5
JB		 993 /*
994 * P2P_DEVICE interface does not have a channel context assigned to it,
995 * so a dedicated PHY context is allocated to it and the corresponding
996 * MAC context is bound to it at this stage.
997 */
998 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
8ca151b5 999
fe0f2de3
IP		 1000 mvmvif->phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
1001 if (!mvmvif->phy_ctxt) {
1002 ret = -ENOSPC;
bd3351ba 1003 goto out_free_bf;
fe0f2de3 1004 }
8ca151b5 1005
53a9d61e 1006 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
8ca151b5
JB		 1007 ret = iwl_mvm_binding_add_vif(mvm, vif);
1008 if (ret)
53a9d61e 1009 goto out_unref_phy;
8ca151b5
JB		 1010
1011 ret = iwl_mvm_add_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
1012 if (ret)
1013 goto out_unbind;
1014
1015 /* Save a pointer to p2p device vif, so it can later be used to
1016 * update the p2p device MAC when a GO is started/stopped */
1017 mvm->p2p_device_vif = vif;
1018 }
1019
63494374 1020 iwl_mvm_vif_dbgfs_register(mvm, vif);
8ca151b5
JB		 1021 goto out_unlock;
1022
1023 out_unbind:
1024 iwl_mvm_binding_remove_vif(mvm, vif);
53a9d61e 1025 out_unref_phy:
fe0f2de3 1026 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
bd3351ba
EP		 1027 out_free_bf:
1028 if (mvm->bf_allowed_vif == mvmvif) {
1029 mvm->bf_allowed_vif = NULL;
a20fd398
AO		 1030 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1031 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
bd3351ba 1032 }
8ca151b5
JB		 1033 out_remove_mac:
1034 mvmvif->phy_ctxt = NULL;
1035 iwl_mvm_mac_ctxt_remove(mvm, vif);
1036 out_release:
5ee2b215
AB		 1037 if (vif->type != NL80211_IFTYPE_P2P_DEVICE)
1038 mvm->vif_count--;
1c2abf72 1039
8ca151b5
JB		 1040 iwl_mvm_mac_ctxt_release(mvm, vif);
1041 out_unlock:
1042 mutex_unlock(&mvm->mutex);
1043
d40fc489
GG		 1044 iwl_mvm_unref(mvm, IWL_MVM_REF_ADD_IF);
1045
8ca151b5
JB		 1046 return ret;
1047}
1048
38a12b5b
JB		 1049static void iwl_mvm_prepare_mac_removal(struct iwl_mvm *mvm,
1050 struct ieee80211_vif *vif)
8ca151b5 1051{
8ca151b5
JB		 1052 u32 tfd_msk = 0, ac;
1053
1054 for (ac = 0; ac < IEEE80211_NUM_ACS; ac++)
1055 if (vif->hw_queue[ac] != IEEE80211_INVAL_HW_QUEUE)
1056 tfd_msk |= BIT(vif->hw_queue[ac]);
1057
1058 if (vif->cab_queue != IEEE80211_INVAL_HW_QUEUE)
1059 tfd_msk |= BIT(vif->cab_queue);
1060
1061 if (tfd_msk) {
1062 mutex_lock(&mvm->mutex);
1063 iwl_mvm_flush_tx_path(mvm, tfd_msk, true);
1064 mutex_unlock(&mvm->mutex);
1065 }
1066
1067 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1068 /*
1069 * Flush the ROC worker which will flush the OFFCHANNEL queue.
1070 * We assume here that all the packets sent to the OFFCHANNEL
1071 * queue are sent in ROC session.
1072 */
1073 flush_work(&mvm->roc_done_wk);
1074 } else {
1075 /*
1076 * By now, all the AC queues are empty. The AGG queues are
1077 * empty too. We already got all the Tx responses for all the
1078 * packets in the queues. The drain work can have been
0742a75a 1079 * triggered. Flush it.
8ca151b5
JB		 1080 */
1081 flush_work(&mvm->sta_drained_wk);
1082 }
38a12b5b
JB		 1083}
1084
1085static void iwl_mvm_mac_remove_interface(struct ieee80211_hw *hw,
1086 struct ieee80211_vif *vif)
1087{
1088 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1089 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1090
1091 iwl_mvm_prepare_mac_removal(mvm, vif);
8ca151b5
JB		 1092
1093 mutex_lock(&mvm->mutex);
1094
7df15b1e
HG		 1095 if (mvm->bf_allowed_vif == mvmvif) {
1096 mvm->bf_allowed_vif = NULL;
a20fd398
AO		 1097 vif->driver_flags &= ~(IEEE80211_VIF_BEACON_FILTER |
1098 IEEE80211_VIF_SUPPORTS_CQM_RSSI);
7df15b1e
HG		 1099 }
1100
63494374
JB		 1101 iwl_mvm_vif_dbgfs_clean(mvm, vif);
1102
8ca151b5
JB		 1103 /*
1104 * For AP/GO interface, the tear down of the resources allocated to the
38a12b5b 1105 * interface is be handled as part of the stop_ap flow.
8ca151b5 1106 */
5023d966
JB		 1107 if (vif->type == NL80211_IFTYPE_AP ||
1108 vif->type == NL80211_IFTYPE_ADHOC) {
507cadf2
DS		 1109#ifdef CONFIG_NL80211_TESTMODE
1110 if (vif == mvm->noa_vif) {
1111 mvm->noa_vif = NULL;
1112 mvm->noa_duration = 0;
1113 }
1114#endif
8ca151b5
JB		 1115 iwl_mvm_dealloc_int_sta(mvm, &mvmvif->bcast_sta);
1116 goto out_release;
1117 }
1118
1119 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1120 mvm->p2p_device_vif = NULL;
1121 iwl_mvm_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
1122 iwl_mvm_binding_remove_vif(mvm, vif);
fe0f2de3 1123 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
8ca151b5
JB		 1124 mvmvif->phy_ctxt = NULL;
1125 }
1126
5ee2b215 1127 if (mvm->vif_count && vif->type != NL80211_IFTYPE_P2P_DEVICE)
8ca151b5 1128 mvm->vif_count--;
1c2abf72 1129
999609f1 1130 iwl_mvm_power_update_mac(mvm);
8ca151b5
JB		 1131 iwl_mvm_mac_ctxt_remove(mvm, vif);
1132
1133out_release:
1134 iwl_mvm_mac_ctxt_release(mvm, vif);
1135 mutex_unlock(&mvm->mutex);
1136}
1137
1138static int iwl_mvm_mac_config(struct ieee80211_hw *hw, u32 changed)
88f2fd73 1139{
8ca151b5
JB		 1140 return 0;
1141}
1142
e59647ea
EP		 1143struct iwl_mvm_mc_iter_data {
1144 struct iwl_mvm *mvm;
1145 int port_id;
1146};
1147
1148static void iwl_mvm_mc_iface_iterator(void *_data, u8 *mac,
1149 struct ieee80211_vif *vif)
1150{
1151 struct iwl_mvm_mc_iter_data *data = _data;
1152 struct iwl_mvm *mvm = data->mvm;
1153 struct iwl_mcast_filter_cmd *cmd = mvm->mcast_filter_cmd;
1154 int ret, len;
1155
1156 /* if we don't have free ports, mcast frames will be dropped */
1157 if (WARN_ON_ONCE(data->port_id >= MAX_PORT_ID_NUM))
1158 return;
1159
1160 if (vif->type != NL80211_IFTYPE_STATION ||
1161 !vif->bss_conf.assoc)
1162 return;
1163
1164 cmd->port_id = data->port_id++;
1165 memcpy(cmd->bssid, vif->bss_conf.bssid, ETH_ALEN);
1166 len = roundup(sizeof(*cmd) + cmd->count * ETH_ALEN, 4);
1167
1c4abec0 1168 ret = iwl_mvm_send_cmd_pdu(mvm, MCAST_FILTER_CMD, CMD_ASYNC, len, cmd);
e59647ea
EP		 1169 if (ret)
1170 IWL_ERR(mvm, "mcast filter cmd error. ret=%d\n", ret);
1171}
1172
1173static void iwl_mvm_recalc_multicast(struct iwl_mvm *mvm)
1174{
1175 struct iwl_mvm_mc_iter_data iter_data = {
1176 .mvm = mvm,
88f2fd73
MG		 1177 };
1178
e59647ea
EP		 1179 lockdep_assert_held(&mvm->mutex);
1180
1181 if (WARN_ON_ONCE(!mvm->mcast_filter_cmd))
1182 return;
1183
1c4abec0 1184 ieee80211_iterate_active_interfaces_atomic(
e59647ea
EP		 1185 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1186 iwl_mvm_mc_iface_iterator, &iter_data);
88f2fd73
MG		 1187}
1188
e59647ea
EP		 1189static u64 iwl_mvm_prepare_multicast(struct ieee80211_hw *hw,
1190 struct netdev_hw_addr_list *mc_list)
8ca151b5 1191{
e59647ea
EP		 1192 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1193 struct iwl_mcast_filter_cmd *cmd;
1194 struct netdev_hw_addr *addr;
1195 int addr_count = netdev_hw_addr_list_count(mc_list);
1196 bool pass_all = false;
1197 int len;
1198
1199 if (addr_count > MAX_MCAST_FILTERING_ADDRESSES) {
1200 pass_all = true;
1201 addr_count = 0;
1202 }
1203
1204 len = roundup(sizeof(*cmd) + addr_count * ETH_ALEN, 4);
1205 cmd = kzalloc(len, GFP_ATOMIC);
1206 if (!cmd)
1207 return 0;
1208
1209 if (pass_all) {
1210 cmd->pass_all = 1;
1211 return (u64)(unsigned long)cmd;
1212 }
1213
1214 netdev_hw_addr_list_for_each(addr, mc_list) {
1215 IWL_DEBUG_MAC80211(mvm, "mcast addr (%d): %pM\n",
1216 cmd->count, addr->addr);
1217 memcpy(&cmd->addr_list[cmd->count * ETH_ALEN],
1218 addr->addr, ETH_ALEN);
1219 cmd->count++;
1220 }
1221
1222 return (u64)(unsigned long)cmd;
8ca151b5
JB		 1223}
1224
1225static void iwl_mvm_configure_filter(struct ieee80211_hw *hw,
1226 unsigned int changed_flags,
1227 unsigned int *total_flags,
1228 u64 multicast)
1229{
e59647ea
EP		 1230 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1231 struct iwl_mcast_filter_cmd *cmd = (void *)(unsigned long)multicast;
8ca151b5 1232
e59647ea 1233 mutex_lock(&mvm->mutex);
51b6b9e0 1234
e59647ea
EP		 1235 /* replace previous configuration */
1236 kfree(mvm->mcast_filter_cmd);
1237 mvm->mcast_filter_cmd = cmd;
51b6b9e0 1238
e59647ea
EP		 1239 if (!cmd)
1240 goto out;
51b6b9e0 1241
e59647ea
EP		 1242 iwl_mvm_recalc_multicast(mvm);
1243out:
1244 mutex_unlock(&mvm->mutex);
1245 *total_flags = 0;
51b6b9e0
EG		 1246}
1247
c87163b9
EP		 1248#ifdef CONFIG_IWLWIFI_BCAST_FILTERING
1249struct iwl_bcast_iter_data {
1250 struct iwl_mvm *mvm;
1251 struct iwl_bcast_filter_cmd *cmd;
1252 u8 current_filter;
1253};
1254
1255static void
1256iwl_mvm_set_bcast_filter(struct ieee80211_vif *vif,
1257 const struct iwl_fw_bcast_filter *in_filter,
1258 struct iwl_fw_bcast_filter *out_filter)
1259{
1260 struct iwl_fw_bcast_filter_attr *attr;
1261 int i;
1262
1263 memcpy(out_filter, in_filter, sizeof(*out_filter));
1264
1265 for (i = 0; i < ARRAY_SIZE(out_filter->attrs); i++) {
1266 attr = &out_filter->attrs[i];
1267
1268 if (!attr->mask)
1269 break;
1270
2ee8f021
EP		 1271 switch (attr->reserved1) {
1272 case cpu_to_le16(BC_FILTER_MAGIC_IP):
1273 if (vif->bss_conf.arp_addr_cnt != 1) {
1274 attr->mask = 0;
1275 continue;
1276 }
1277
1278 attr->val = vif->bss_conf.arp_addr_list[0];
1279 break;
1280 case cpu_to_le16(BC_FILTER_MAGIC_MAC):
1281 attr->val = *(__be32 *)&vif->addr[2];
1282 break;
1283 default:
1284 break;
1285 }
1286 attr->reserved1 = 0;
c87163b9
EP		 1287 out_filter->num_attrs++;
1288 }
1289}
1290
1291static void iwl_mvm_bcast_filter_iterator(void *_data, u8 *mac,
1292 struct ieee80211_vif *vif)
1293{
1294 struct iwl_bcast_iter_data *data = _data;
1295 struct iwl_mvm *mvm = data->mvm;
1296 struct iwl_bcast_filter_cmd *cmd = data->cmd;
1297 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1298 struct iwl_fw_bcast_mac *bcast_mac;
1299 int i;
1300
1301 if (WARN_ON(mvmvif->id >= ARRAY_SIZE(cmd->macs)))
1302 return;
1303
1304 bcast_mac = &cmd->macs[mvmvif->id];
1305
e48393e8
IP		 1306 /*
1307 * enable filtering only for associated stations, but not for P2P
1308 * Clients
1309 */
1310 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p ||
1311 !vif->bss_conf.assoc)
c87163b9
EP		 1312 return;
1313
1314 bcast_mac->default_discard = 1;
1315
1316 /* copy all configured filters */
1317 for (i = 0; mvm->bcast_filters[i].attrs[0].mask; i++) {
1318 /*
1319 * Make sure we don't exceed our filters limit.
1320 * if there is still a valid filter to be configured,
1321 * be on the safe side and just allow bcast for this mac.
1322 */
1323 if (WARN_ON_ONCE(data->current_filter >=
1324 ARRAY_SIZE(cmd->filters))) {
1325 bcast_mac->default_discard = 0;
1326 bcast_mac->attached_filters = 0;
1327 break;
1328 }
1329
1330 iwl_mvm_set_bcast_filter(vif,
1331 &mvm->bcast_filters[i],
1332 &cmd->filters[data->current_filter]);
1333
1334 /* skip current filter if it contains no attributes */
1335 if (!cmd->filters[data->current_filter].num_attrs)
1336 continue;
1337
1338 /* attach the filter to current mac */
1339 bcast_mac->attached_filters |=
1340 cpu_to_le16(BIT(data->current_filter));
1341
1342 data->current_filter++;
1343 }
1344}
1345
de06a59e
EP		 1346bool iwl_mvm_bcast_filter_build_cmd(struct iwl_mvm *mvm,
1347 struct iwl_bcast_filter_cmd *cmd)
c87163b9 1348{
c87163b9
EP		 1349 struct iwl_bcast_iter_data iter_data = {
1350 .mvm = mvm,
de06a59e 1351 .cmd = cmd,
c87163b9
EP		 1352 };
1353
de06a59e
EP		 1354 memset(cmd, 0, sizeof(*cmd));
1355 cmd->max_bcast_filters = ARRAY_SIZE(cmd->filters);
1356 cmd->max_macs = ARRAY_SIZE(cmd->macs);
1357
1358#ifdef CONFIG_IWLWIFI_DEBUGFS
1359 /* use debugfs filters/macs if override is configured */
1360 if (mvm->dbgfs_bcast_filtering.override) {
1361 memcpy(cmd->filters, &mvm->dbgfs_bcast_filtering.cmd.filters,
1362 sizeof(cmd->filters));
1363 memcpy(cmd->macs, &mvm->dbgfs_bcast_filtering.cmd.macs,
1364 sizeof(cmd->macs));
1365 return true;
1366 }
1367#endif
c87163b9
EP		 1368
1369 /* if no filters are configured, do nothing */
1370 if (!mvm->bcast_filters)
de06a59e 1371 return false;
c87163b9
EP		 1372
1373 /* configure and attach these filters for each associated sta vif */
1374 ieee80211_iterate_active_interfaces(
1375 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1376 iwl_mvm_bcast_filter_iterator, &iter_data);
1377
de06a59e
EP		 1378 return true;
1379}
1380static int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1381 struct ieee80211_vif *vif)
1382{
1383 struct iwl_bcast_filter_cmd cmd;
1384
1385 if (!(mvm->fw->ucode_capa.flags & IWL_UCODE_TLV_FLAGS_BCAST_FILTERING))
1386 return 0;
1387
1388 if (!iwl_mvm_bcast_filter_build_cmd(mvm, &cmd))
1389 return 0;
1390
a1022927 1391 return iwl_mvm_send_cmd_pdu(mvm, BCAST_FILTER_CMD, 0,
c87163b9
EP		 1392 sizeof(cmd), &cmd);
1393}
1394#else
1395static inline int iwl_mvm_configure_bcast_filter(struct iwl_mvm *mvm,
1396 struct ieee80211_vif *vif)
1397{
1398 return 0;
1399}
1400#endif
1401
8ca151b5
JB		 1402static void iwl_mvm_bss_info_changed_station(struct iwl_mvm *mvm,
1403 struct ieee80211_vif *vif,
1404 struct ieee80211_bss_conf *bss_conf,
1405 u32 changes)
1406{
1407 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1408 int ret;
1409
6e97b0d2
IP		 1410 /*
1411 * Re-calculate the tsf id, as the master-slave relations depend on the
1412 * beacon interval, which was not known when the station interface was
1413 * added.
1414 */
1415 if (changes & BSS_CHANGED_ASSOC && bss_conf->assoc)
1416 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1417
bca49d9a 1418 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false);
8ca151b5
JB		 1419 if (ret)
1420 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
1421
1422 if (changes & BSS_CHANGED_ASSOC) {
1423 if (bss_conf->assoc) {
1424 /* add quota for this interface */
0166230c 1425 ret = iwl_mvm_update_quotas(mvm, NULL);
8ca151b5
JB		 1426 if (ret) {
1427 IWL_ERR(mvm, "failed to update quotas\n");
1428 return;
1429 }
016d27e1
JB		 1430
1431 if (test_bit(IWL_MVM_STATUS_IN_HW_RESTART,
1432 &mvm->status)) {
1433 /*
1434 * If we're restarting then the firmware will
1435 * obviously have lost synchronisation with
1436 * the AP. It will attempt to synchronise by
1437 * itself, but we can make it more reliable by
1438 * scheduling a session protection time event.
1439 *
1440 * The firmware needs to receive a beacon to
1441 * catch up with synchronisation, use 110% of
1442 * the beacon interval.
1443 *
1444 * Set a large maximum delay to allow for more
1445 * than a single interface.
1446 */
1447 u32 dur = (11 * vif->bss_conf.beacon_int) / 10;
1448 iwl_mvm_protect_session(mvm, vif, dur, dur,
1449 5 * dur);
1450 }
1f3b0ff8
LE		 1451
1452 iwl_mvm_sf_update(mvm, vif, false);
175a70b7 1453 iwl_mvm_power_vif_assoc(mvm, vif);
29a90a49
EP		 1454 if (vif->p2p)
1455 iwl_mvm_ref(mvm, IWL_MVM_REF_P2P_CLIENT);
8ca151b5 1456 } else if (mvmvif->ap_sta_id != IWL_MVM_STATION_COUNT) {
1f3b0ff8
LE		 1457 /*
1458 * If update fails - SF might be running in associated
1459 * mode while disassociated - which is forbidden.
1460 */
1461 WARN_ONCE(iwl_mvm_sf_update(mvm, vif, false),
1462 "Failed to update SF upon disassociation\n");
1463
8ca151b5
JB		 1464 /* remove AP station now that the MAC is unassoc */
1465 ret = iwl_mvm_rm_sta_id(mvm, vif, mvmvif->ap_sta_id);
1466 if (ret)
1467 IWL_ERR(mvm, "failed to remove AP station\n");
37577fe2
EP		 1468
1469 if (mvm->d0i3_ap_sta_id == mvmvif->ap_sta_id)
1470 mvm->d0i3_ap_sta_id = IWL_MVM_STATION_COUNT;
8ca151b5
JB		 1471 mvmvif->ap_sta_id = IWL_MVM_STATION_COUNT;
1472 /* remove quota for this interface */
0166230c 1473 ret = iwl_mvm_update_quotas(mvm, NULL);
8ca151b5
JB		 1474 if (ret)
1475 IWL_ERR(mvm, "failed to update quotas\n");
29a90a49
EP		 1476
1477 if (vif->p2p)
1478 iwl_mvm_unref(mvm, IWL_MVM_REF_P2P_CLIENT);
8ca151b5 1479 }
a20fd398 1480
e59647ea 1481 iwl_mvm_recalc_multicast(mvm);
c87163b9 1482 iwl_mvm_configure_bcast_filter(mvm, vif);
e59647ea 1483
a20fd398
AO		 1484 /* reset rssi values */
1485 mvmvif->bf_data.ave_beacon_signal = 0;
1486
8e484f0b 1487 iwl_mvm_bt_coex_vif_change(mvm);
f94045ed
EG		 1488 iwl_mvm_update_smps(mvm, vif, IWL_MVM_SMPS_REQ_TT,
1489 IEEE80211_SMPS_AUTOMATIC);
989c6505 1490 } else if (changes & BSS_CHANGED_BEACON_INFO) {
210a544e
JB		 1491 /*
1492 * We received a beacon _after_ association so
1493 * remove the session protection.
1494 */
1495 iwl_mvm_remove_time_event(mvm, mvmvif,
1496 &mvmvif->time_event_data);
0229cdaf 1497 iwl_mvm_sf_update(mvm, vif, false);
a1022927 1498 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
51498cf6
AB		 1499 } else if (changes & (BSS_CHANGED_PS | BSS_CHANGED_P2P_PS |
1500 BSS_CHANGED_QOS)) {
999609f1 1501 ret = iwl_mvm_power_update_mac(mvm);
4bf881f5
AB		 1502 if (ret)
1503 IWL_ERR(mvm, "failed to update power mode\n");
8ca151b5 1504 }
88f2fd73
MG		 1505 if (changes & BSS_CHANGED_TXPOWER) {
1506 IWL_DEBUG_CALIB(mvm, "Changing TX Power to %d\n",
1507 bss_conf->txpower);
1508 iwl_mvm_set_tx_power(mvm, vif, bss_conf->txpower);
1509 }
a20fd398
AO		 1510
1511 if (changes & BSS_CHANGED_CQM) {
3c6acb61 1512 IWL_DEBUG_MAC80211(mvm, "cqm info_changed\n");
a20fd398
AO		 1513 /* reset cqm events tracking */
1514 mvmvif->bf_data.last_cqm_event = 0;
fa7b2e7f
AA		 1515 if (mvmvif->bf_data.bf_enabled) {
1516 ret = iwl_mvm_enable_beacon_filter(mvm, vif, 0);
1517 if (ret)
1518 IWL_ERR(mvm,
1519 "failed to update CQM thresholds\n");
1520 }
a20fd398 1521 }
2ee8f021
EP		 1522
1523 if (changes & BSS_CHANGED_ARP_FILTER) {
3c6acb61 1524 IWL_DEBUG_MAC80211(mvm, "arp filter changed\n");
2ee8f021
EP		 1525 iwl_mvm_configure_bcast_filter(mvm, vif);
1526 }
8ca151b5
JB		 1527}
1528
5023d966
JB		 1529static int iwl_mvm_start_ap_ibss(struct ieee80211_hw *hw,
1530 struct ieee80211_vif *vif)
8ca151b5
JB		 1531{
1532 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1533 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1534 int ret;
1535
1536 mutex_lock(&mvm->mutex);
1537
1538 /* Send the beacon template */
1539 ret = iwl_mvm_mac_ctxt_beacon_changed(mvm, vif);
1540 if (ret)
1541 goto out_unlock;
1542
6e97b0d2
IP		 1543 /*
1544 * Re-calculate the tsf id, as the master-slave relations depend on the
1545 * beacon interval, which was not known when the AP interface was added.
1546 */
1547 if (vif->type == NL80211_IFTYPE_AP)
1548 iwl_mvm_mac_ctxt_recalc_tsf_id(mvm, vif);
1549
8ca151b5
JB		 1550 /* Add the mac context */
1551 ret = iwl_mvm_mac_ctxt_add(mvm, vif);
1552 if (ret)
1553 goto out_unlock;
1554
1555 /* Perform the binding */
1556 ret = iwl_mvm_binding_add_vif(mvm, vif);
1557 if (ret)
1558 goto out_remove;
1559
8ca151b5
JB		 1560 /* Send the bcast station. At this stage the TBTT and DTIM time events
1561 * are added and applied to the scheduler */
1562 ret = iwl_mvm_send_bcast_sta(mvm, vif, &mvmvif->bcast_sta);
1563 if (ret)
1564 goto out_unbind;
1565
5691e218
IP		 1566 /* must be set before quota calculations */
1567 mvmvif->ap_ibss_active = true;
1568
a11e144e 1569 /* power updated needs to be done before quotas */
999609f1 1570 iwl_mvm_power_update_mac(mvm);
a11e144e 1571
0166230c 1572 ret = iwl_mvm_update_quotas(mvm, NULL);
8ca151b5 1573 if (ret)
a11e144e 1574 goto out_quota_failed;
8ca151b5 1575
5023d966 1576 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
8ca151b5 1577 if (vif->p2p && mvm->p2p_device_vif)
bca49d9a 1578 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false);
8ca151b5 1579
29a90a49
EP		 1580 iwl_mvm_ref(mvm, IWL_MVM_REF_AP_IBSS);
1581
8e484f0b 1582 iwl_mvm_bt_coex_vif_change(mvm);
dac94da8 1583
8ca151b5
JB		 1584 mutex_unlock(&mvm->mutex);
1585 return 0;
1586
a11e144e 1587out_quota_failed:
999609f1 1588 iwl_mvm_power_update_mac(mvm);
5691e218 1589 mvmvif->ap_ibss_active = false;
8ca151b5
JB		 1590 iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
1591out_unbind:
1592 iwl_mvm_binding_remove_vif(mvm, vif);
1593out_remove:
1594 iwl_mvm_mac_ctxt_remove(mvm, vif);
1595out_unlock:
1596 mutex_unlock(&mvm->mutex);
1597 return ret;
1598}
1599
5023d966
JB		 1600static void iwl_mvm_stop_ap_ibss(struct ieee80211_hw *hw,
1601 struct ieee80211_vif *vif)
8ca151b5
JB		 1602{
1603 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1604 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1605
38a12b5b
JB		 1606 iwl_mvm_prepare_mac_removal(mvm, vif);
1607
8ca151b5
JB		 1608 mutex_lock(&mvm->mutex);
1609
664322fa 1610 /* Handle AP stop while in CSA */
7f0a7c67
AO		 1611 if (rcu_access_pointer(mvm->csa_vif) == vif) {
1612 iwl_mvm_remove_time_event(mvm, mvmvif,
1613 &mvmvif->time_event_data);
664322fa 1614 RCU_INIT_POINTER(mvm->csa_vif, NULL);
7f0a7c67 1615 }
664322fa 1616
003e5236
AO		 1617 if (rcu_access_pointer(mvm->csa_tx_blocked_vif) == vif) {
1618 RCU_INIT_POINTER(mvm->csa_tx_blocked_vif, NULL);
1619 mvm->csa_tx_block_bcn_timeout = 0;
1620 }
1621
5023d966 1622 mvmvif->ap_ibss_active = false;
1c87bbad 1623 mvm->ap_last_beacon_gp2 = 0;
8ca151b5 1624
8e484f0b 1625 iwl_mvm_bt_coex_vif_change(mvm);
dac94da8 1626
29a90a49
EP		 1627 iwl_mvm_unref(mvm, IWL_MVM_REF_AP_IBSS);
1628
5023d966 1629 /* Need to update the P2P Device MAC (only GO, IBSS is single vif) */
8ca151b5 1630 if (vif->p2p && mvm->p2p_device_vif)
bca49d9a 1631 iwl_mvm_mac_ctxt_changed(mvm, mvm->p2p_device_vif, false);
8ca151b5 1632
0166230c 1633 iwl_mvm_update_quotas(mvm, NULL);
8ca151b5
JB		 1634 iwl_mvm_send_rm_bcast_sta(mvm, &mvmvif->bcast_sta);
1635 iwl_mvm_binding_remove_vif(mvm, vif);
a11e144e 1636
999609f1 1637 iwl_mvm_power_update_mac(mvm);
a11e144e 1638
8ca151b5
JB		 1639 iwl_mvm_mac_ctxt_remove(mvm, vif);
1640
1641 mutex_unlock(&mvm->mutex);
1642}
1643
5023d966
JB		 1644static void
1645iwl_mvm_bss_info_changed_ap_ibss(struct iwl_mvm *mvm,
1646 struct ieee80211_vif *vif,
1647 struct ieee80211_bss_conf *bss_conf,
1648 u32 changes)
8ca151b5 1649{
be2056fc 1650 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
8a5e3660 1651
be2056fc
IP		 1652 /* Changes will be applied when the AP/IBSS is started */
1653 if (!mvmvif->ap_ibss_active)
1654 return;
1655
863230da
JB		 1656 if (changes & (BSS_CHANGED_ERP_CTS_PROT | BSS_CHANGED_HT |
1657 BSS_CHANGED_BANDWIDTH) &&
bca49d9a 1658 iwl_mvm_mac_ctxt_changed(mvm, vif, false))
863230da 1659 IWL_ERR(mvm, "failed to update MAC %pM\n", vif->addr);
8a5e3660 1660
8ca151b5 1661 /* Need to send a new beacon template to the FW */
863230da
JB		 1662 if (changes & BSS_CHANGED_BEACON &&
1663 iwl_mvm_mac_ctxt_beacon_changed(mvm, vif))
1664 IWL_WARN(mvm, "Failed updating beacon data\n");
8ca151b5
JB		 1665}
1666
1667static void iwl_mvm_bss_info_changed(struct ieee80211_hw *hw,
1668 struct ieee80211_vif *vif,
1669 struct ieee80211_bss_conf *bss_conf,
1670 u32 changes)
1671{
1672 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1673
1674 mutex_lock(&mvm->mutex);
1675
723f02ed 1676 if (changes & BSS_CHANGED_IDLE && !bss_conf->idle)
fb98be5e 1677 iwl_mvm_scan_offload_stop(mvm, true);
723f02ed 1678
8ca151b5
JB		 1679 switch (vif->type) {
1680 case NL80211_IFTYPE_STATION:
1681 iwl_mvm_bss_info_changed_station(mvm, vif, bss_conf, changes);
1682 break;
1683 case NL80211_IFTYPE_AP:
5023d966
JB		 1684 case NL80211_IFTYPE_ADHOC:
1685 iwl_mvm_bss_info_changed_ap_ibss(mvm, vif, bss_conf, changes);
8ca151b5
JB		 1686 break;
1687 default:
1688 /* shouldn't happen */
1689 WARN_ON_ONCE(1);
1690 }
1691
1692 mutex_unlock(&mvm->mutex);
1693}
1694
1695static int iwl_mvm_mac_hw_scan(struct ieee80211_hw *hw,
1696 struct ieee80211_vif *vif,
c56ef672 1697 struct ieee80211_scan_request *hw_req)
8ca151b5
JB		 1698{
1699 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
c56ef672 1700 struct cfg80211_scan_request *req = &hw_req->req;
8ca151b5
JB		 1701 int ret;
1702
762533ba
DS		 1703 if (req->n_channels == 0 ||
1704 req->n_channels > mvm->fw->ucode_capa.n_scan_channels)
8ca151b5
JB		 1705 return -EINVAL;
1706
1707 mutex_lock(&mvm->mutex);
1708
a6623e84
JB		 1709 switch (mvm->scan_status) {
1710 case IWL_MVM_SCAN_SCHED:
fb98be5e 1711 ret = iwl_mvm_scan_offload_stop(mvm, true);
a6623e84
JB		 1712 if (ret) {
1713 ret = -EBUSY;
1714 goto out;
1715 }
a6623e84
JB		 1716 break;
1717 case IWL_MVM_SCAN_NONE:
1718 break;
1719 default:
8ca151b5 1720 ret = -EBUSY;
519e2026
AN		 1721 goto out;
1722 }
8ca151b5 1723
519e2026
AN		 1724 iwl_mvm_ref(mvm, IWL_MVM_REF_SCAN);
1725
fb98be5e
DS		 1726 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
1727 ret = iwl_mvm_unified_scan_lmac(mvm, vif, hw_req);
1728 else
1729 ret = iwl_mvm_scan_request(mvm, vif, req);
1730
519e2026
AN		 1731 if (ret)
1732 iwl_mvm_unref(mvm, IWL_MVM_REF_SCAN);
1733out:
8ca151b5 1734 mutex_unlock(&mvm->mutex);
33ea27f6
AN		 1735 /* make sure to flush the Rx handler before the next scan arrives */
1736 iwl_mvm_wait_for_async_handlers(mvm);
8ca151b5
JB		 1737 return ret;
1738}
1739
1740static void iwl_mvm_mac_cancel_hw_scan(struct ieee80211_hw *hw,
1741 struct ieee80211_vif *vif)
1742{
1743 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1744
1745 mutex_lock(&mvm->mutex);
1746
1747 iwl_mvm_cancel_scan(mvm);
1748
1749 mutex_unlock(&mvm->mutex);
1750}
1751
1752static void
1753iwl_mvm_mac_allow_buffered_frames(struct ieee80211_hw *hw,
3e56eadf 1754 struct ieee80211_sta *sta, u16 tids,
8ca151b5
JB		 1755 int num_frames,
1756 enum ieee80211_frame_release_type reason,
1757 bool more_data)
1758{
1759 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
8ca151b5 1760
3e56eadf 1761 /* Called when we need to transmit (a) frame(s) from mac80211 */
8ca151b5 1762
3e56eadf
JB		 1763 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
1764 tids, more_data, false);
1765}
1766
1767static void
1768iwl_mvm_mac_release_buffered_frames(struct ieee80211_hw *hw,
1769 struct ieee80211_sta *sta, u16 tids,
1770 int num_frames,
1771 enum ieee80211_frame_release_type reason,
1772 bool more_data)
1773{
1774 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1775
1776 /* Called when we need to transmit (a) frame(s) from agg queue */
1777
1778 iwl_mvm_sta_modify_sleep_tx_count(mvm, sta, reason, num_frames,
1779 tids, more_data, true);
8ca151b5
JB		 1780}
1781
1782static void iwl_mvm_mac_sta_notify(struct ieee80211_hw *hw,
1783 struct ieee80211_vif *vif,
1784 enum sta_notify_cmd cmd,
1785 struct ieee80211_sta *sta)
1786{
1787 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
5b577a90 1788 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
3e56eadf 1789 int tid;
8ca151b5
JB		 1790
1791 switch (cmd) {
1792 case STA_NOTIFY_SLEEP:
e3d4bc8c 1793 if (atomic_read(&mvm->pending_frames[mvmsta->sta_id]) > 0)
8ca151b5 1794 ieee80211_sta_block_awake(hw, sta, true);
3e56eadf
JB		 1795 spin_lock_bh(&mvmsta->lock);
1796 for (tid = 0; tid < IWL_MAX_TID_COUNT; tid++) {
1797 struct iwl_mvm_tid_data *tid_data;
1798
1799 tid_data = &mvmsta->tid_data[tid];
1800 if (tid_data->state != IWL_AGG_ON &&
1801 tid_data->state != IWL_EMPTYING_HW_QUEUE_DELBA)
1802 continue;
1803 if (iwl_mvm_tid_queued(tid_data) == 0)
1804 continue;
1805 ieee80211_sta_set_buffered(sta, tid, true);
1806 }
1807 spin_unlock_bh(&mvmsta->lock);
8ca151b5
JB		 1808 /*
1809 * The fw updates the STA to be asleep. Tx packets on the Tx
1810 * queues to this station will not be transmitted. The fw will
1811 * send a Tx response with TX_STATUS_FAIL_DEST_PS.
1812 */
1813 break;
1814 case STA_NOTIFY_AWAKE:
881acd89 1815 if (WARN_ON(mvmsta->sta_id == IWL_MVM_STATION_COUNT))
8ca151b5 1816 break;
9cc40712 1817 iwl_mvm_sta_modify_ps_wake(mvm, sta);
8ca151b5
JB		 1818 break;
1819 default:
1820 break;
1821 }
1822}
1823
1ddbbb0c
JB		 1824static void iwl_mvm_sta_pre_rcu_remove(struct ieee80211_hw *hw,
1825 struct ieee80211_vif *vif,
1826 struct ieee80211_sta *sta)
1827{
1828 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1829 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
1830
1831 /*
1832 * This is called before mac80211 does RCU synchronisation,
1833 * so here we already invalidate our internal RCU-protected
1834 * station pointer. The rest of the code will thus no longer
1835 * be able to find the station this way, and we don't rely
1836 * on further RCU synchronisation after the sta_state()
1837 * callback deleted the station.
1838 */
1839 mutex_lock(&mvm->mutex);
1840 if (sta == rcu_access_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id]))
1841 rcu_assign_pointer(mvm->fw_id_to_mac_id[mvm_sta->sta_id],
1842 ERR_PTR(-ENOENT));
1843 mutex_unlock(&mvm->mutex);
1844}
1845
cf7b491d
AN		 1846static int iwl_mvm_tdls_sta_count(struct iwl_mvm *mvm)
1847{
1848 struct ieee80211_sta *sta;
1849 int count = 0;
1850 int i;
1851
1852 lockdep_assert_held(&mvm->mutex);
1853
1854 for (i = 0; i < IWL_MVM_STATION_COUNT; i++) {
1855 sta = rcu_dereference_protected(mvm->fw_id_to_mac_id[i],
1856 lockdep_is_held(&mvm->mutex));
1857 if (!sta || IS_ERR(sta) || !sta->tdls)
1858 continue;
1859
1860 count++;
1861 }
1862
1863 return count;
1864}
1865
8ca151b5
JB		 1866static int iwl_mvm_mac_sta_state(struct ieee80211_hw *hw,
1867 struct ieee80211_vif *vif,
1868 struct ieee80211_sta *sta,
1869 enum ieee80211_sta_state old_state,
1870 enum ieee80211_sta_state new_state)
1871{
1872 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1873 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1874 int ret;
1875
1876 IWL_DEBUG_MAC80211(mvm, "station %pM state change %d->%d\n",
1877 sta->addr, old_state, new_state);
1878
1879 /* this would be a mac80211 bug ... but don't crash */
1880 if (WARN_ON_ONCE(!mvmvif->phy_ctxt))
1881 return -EINVAL;
1882
1883 /* if a STA is being removed, reuse its ID */
1884 flush_work(&mvm->sta_drained_wk);
1885
1886 mutex_lock(&mvm->mutex);
1887 if (old_state == IEEE80211_STA_NOTEXIST &&
1888 new_state == IEEE80211_STA_NONE) {
48bc1307
JB		 1889 /*
1890 * Firmware bug - it'll crash if the beacon interval is less
1891 * than 16. We can't avoid connecting at all, so refuse the
1892 * station state change, this will cause mac80211 to abandon
1893 * attempts to connect to this AP, and eventually wpa_s will
1894 * blacklist the AP...
1895 */
1896 if (vif->type == NL80211_IFTYPE_STATION &&
1897 vif->bss_conf.beacon_int < 16) {
1898 IWL_ERR(mvm,
1899 "AP %pM beacon interval is %d, refusing due to firmware bug!\n",
1900 sta->addr, vif->bss_conf.beacon_int);
1901 ret = -EINVAL;
1902 goto out_unlock;
1903 }
cf7b491d
AN		 1904
1905 if (sta->tdls &&
1906 (vif->p2p ||
1907 iwl_mvm_tdls_sta_count(mvm) == IWL_MVM_TDLS_STA_COUNT ||
1908 iwl_mvm_phy_ctx_count(mvm) > 1)) {
1909 IWL_DEBUG_MAC80211(mvm, "refusing TDLS sta\n");
1910 ret = -EBUSY;
1911 goto out_unlock;
1912 }
1913
8ca151b5
JB		 1914 ret = iwl_mvm_add_sta(mvm, vif, sta);
1915 } else if (old_state == IEEE80211_STA_NONE &&
1916 new_state == IEEE80211_STA_AUTH) {
e820c2da
HD		 1917 /*
1918 * EBS may be disabled due to previous failures reported by FW.
1919 * Reset EBS status here assuming environment has been changed.
1920 */
1921 mvm->last_ebs_successful = true;
8ca151b5
JB		 1922 ret = 0;
1923 } else if (old_state == IEEE80211_STA_AUTH &&
1924 new_state == IEEE80211_STA_ASSOC) {
7a453973
JB		 1925 ret = iwl_mvm_update_sta(mvm, vif, sta);
1926 if (ret == 0)
1927 iwl_mvm_rs_rate_init(mvm, sta,
b87c2179
ES		 1928 mvmvif->phy_ctxt->channel->band,
1929 true);
8ca151b5
JB		 1930 } else if (old_state == IEEE80211_STA_ASSOC &&
1931 new_state == IEEE80211_STA_AUTHORIZED) {
7df15b1e 1932 /* enable beacon filtering */
fa7b2e7f 1933 WARN_ON(iwl_mvm_enable_beacon_filter(mvm, vif, 0));
8ca151b5
JB		 1934 ret = 0;
1935 } else if (old_state == IEEE80211_STA_AUTHORIZED &&
1936 new_state == IEEE80211_STA_ASSOC) {
7df15b1e 1937 /* disable beacon filtering */
a1022927 1938 WARN_ON(iwl_mvm_disable_beacon_filter(mvm, vif, 0));
8ca151b5
JB		 1939 ret = 0;
1940 } else if (old_state == IEEE80211_STA_ASSOC &&
1941 new_state == IEEE80211_STA_AUTH) {
1942 ret = 0;
1943 } else if (old_state == IEEE80211_STA_AUTH &&
1944 new_state == IEEE80211_STA_NONE) {
1945 ret = 0;
1946 } else if (old_state == IEEE80211_STA_NONE &&
1947 new_state == IEEE80211_STA_NOTEXIST) {
1948 ret = iwl_mvm_rm_sta(mvm, vif, sta);
1949 } else {
1950 ret = -EIO;
1951 }
48bc1307 1952 out_unlock:
8ca151b5
JB		 1953 mutex_unlock(&mvm->mutex);
1954
1955 return ret;
1956}
1957
1958static int iwl_mvm_mac_set_rts_threshold(struct ieee80211_hw *hw, u32 value)
1959{
1960 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1961
1962 mvm->rts_threshold = value;
1963
1964 return 0;
1965}
1966
1f3b0ff8
LE		 1967static void iwl_mvm_sta_rc_update(struct ieee80211_hw *hw,
1968 struct ieee80211_vif *vif,
1969 struct ieee80211_sta *sta, u32 changed)
1970{
1971 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1972
1973 if (vif->type == NL80211_IFTYPE_STATION &&
1974 changed & IEEE80211_RC_NSS_CHANGED)
1975 iwl_mvm_sf_update(mvm, vif, false);
1976}
1977
8ca151b5
JB		 1978static int iwl_mvm_mac_conf_tx(struct ieee80211_hw *hw,
1979 struct ieee80211_vif *vif, u16 ac,
1980 const struct ieee80211_tx_queue_params *params)
1981{
1982 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
1983 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1984
1985 mvmvif->queue_params[ac] = *params;
1986
1987 /*
1988 * No need to update right away, we'll get BSS_CHANGED_QOS
1989 * The exception is P2P_DEVICE interface which needs immediate update.
1990 */
1991 if (vif->type == NL80211_IFTYPE_P2P_DEVICE) {
1992 int ret;
1993
1994 mutex_lock(&mvm->mutex);
bca49d9a 1995 ret = iwl_mvm_mac_ctxt_changed(mvm, vif, false);
8ca151b5
JB		 1996 mutex_unlock(&mvm->mutex);
1997 return ret;
1998 }
1999 return 0;
2000}
2001
2002static void iwl_mvm_mac_mgd_prepare_tx(struct ieee80211_hw *hw,
2003 struct ieee80211_vif *vif)
2004{
2005 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2006 u32 duration = min(IWL_MVM_TE_SESSION_PROTECTION_MAX_TIME_MS,
2007 200 + vif->bss_conf.beacon_int);
2008 u32 min_duration = min(IWL_MVM_TE_SESSION_PROTECTION_MIN_TIME_MS,
2009 100 + vif->bss_conf.beacon_int);
2010
2011 if (WARN_ON_ONCE(vif->bss_conf.assoc))
2012 return;
2013
2014 mutex_lock(&mvm->mutex);
2015 /* Try really hard to protect the session and hear a beacon */
016d27e1 2016 iwl_mvm_protect_session(mvm, vif, duration, min_duration, 500);
8ca151b5
JB		 2017 mutex_unlock(&mvm->mutex);
2018}
2019
35a000b7
DS		 2020static int iwl_mvm_mac_sched_scan_start(struct ieee80211_hw *hw,
2021 struct ieee80211_vif *vif,
2022 struct cfg80211_sched_scan_request *req,
633e2713 2023 struct ieee80211_scan_ies *ies)
35a000b7
DS		 2024{
2025 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2026 int ret;
2027
2028 mutex_lock(&mvm->mutex);
2029
b538b8ce 2030 if (!iwl_mvm_is_idle(mvm)) {
bd5e4744
DS		 2031 ret = -EBUSY;
2032 goto out;
2033 }
2034
91b80256
AN		 2035 switch (mvm->scan_status) {
2036 case IWL_MVM_SCAN_OS:
2037 IWL_DEBUG_SCAN(mvm, "Stopping previous scan for sched_scan\n");
2038 ret = iwl_mvm_cancel_scan(mvm);
2039 if (ret) {
2040 ret = -EBUSY;
2041 goto out;
2042 }
2043
2044 /*
2045 * iwl_mvm_rx_scan_complete() will be called soon but will
2046 * not reset the scan status as it won't be IWL_MVM_SCAN_OS
2047 * any more since we queue the next scan immediately (below).
2048 * We make sure it is called before the next scan starts by
2049 * flushing the async-handlers work.
2050 */
2051 break;
2052 case IWL_MVM_SCAN_NONE:
2053 break;
2054 default:
35a000b7
DS		 2055 ret = -EBUSY;
2056 goto out;
2057 }
2058
2059 mvm->scan_status = IWL_MVM_SCAN_SCHED;
2060
fb98be5e
DS		 2061 if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)) {
2062 ret = iwl_mvm_config_sched_scan(mvm, vif, req, ies);
2063 if (ret)
2064 goto err;
2065 }
35a000b7
DS		 2066
2067 ret = iwl_mvm_config_sched_scan_profiles(mvm, req);
2068 if (ret)
2069 goto err;
2070
fb98be5e
DS		 2071 if (mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_LMAC_SCAN)
2072 ret = iwl_mvm_unified_sched_scan_lmac(mvm, vif, req, ies);
2073 else
2074 ret = iwl_mvm_sched_scan_start(mvm, req);
2075
35a000b7
DS		 2076 if (!ret)
2077 goto out;
2078err:
2079 mvm->scan_status = IWL_MVM_SCAN_NONE;
2080out:
2081 mutex_unlock(&mvm->mutex);
91b80256
AN		 2082 /* make sure to flush the Rx handler before the next scan arrives */
2083 iwl_mvm_wait_for_async_handlers(mvm);
35a000b7
DS		 2084 return ret;
2085}
2086
37e3308c
JB		 2087static int iwl_mvm_mac_sched_scan_stop(struct ieee80211_hw *hw,
2088 struct ieee80211_vif *vif)
35a000b7
DS		 2089{
2090 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
33ea27f6 2091 int ret;
35a000b7
DS		 2092
2093 mutex_lock(&mvm->mutex);
fb98be5e 2094 ret = iwl_mvm_scan_offload_stop(mvm, false);
35a000b7 2095 mutex_unlock(&mvm->mutex);
33ea27f6 2096 iwl_mvm_wait_for_async_handlers(mvm);
37e3308c 2097
33ea27f6 2098 return ret;
35a000b7
DS		 2099}
2100
8ca151b5
JB		 2101static int iwl_mvm_mac_set_key(struct ieee80211_hw *hw,
2102 enum set_key_cmd cmd,
2103 struct ieee80211_vif *vif,
2104 struct ieee80211_sta *sta,
2105 struct ieee80211_key_conf *key)
2106{
2107 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2108 int ret;
2109
2110 if (iwlwifi_mod_params.sw_crypto) {
2111 IWL_DEBUG_MAC80211(mvm, "leave - hwcrypto disabled\n");
2112 return -EOPNOTSUPP;
2113 }
2114
2115 switch (key->cipher) {
2116 case WLAN_CIPHER_SUITE_TKIP:
2117 key->flags |= IEEE80211_KEY_FLAG_GENERATE_MMIC;
2118 /* fall-through */
2119 case WLAN_CIPHER_SUITE_CCMP:
2120 key->flags |= IEEE80211_KEY_FLAG_GENERATE_IV;
2121 break;
2122 case WLAN_CIPHER_SUITE_AES_CMAC:
2123 WARN_ON_ONCE(!(hw->flags & IEEE80211_HW_MFP_CAPABLE));
2124 break;
2125 case WLAN_CIPHER_SUITE_WEP40:
2126 case WLAN_CIPHER_SUITE_WEP104:
2127 /*
2128 * Support for TX only, at least for now, so accept
2129 * the key and do nothing else. Then mac80211 will
2130 * pass it for TX but we don't have to use it for RX.
2131 */
2132 return 0;
2133 default:
e36e5433
MS		 2134 /* currently FW supports only one optional cipher scheme */
2135 if (hw->n_cipher_schemes &&
2136 hw->cipher_schemes->cipher == key->cipher)
2137 key->flags |= IEEE80211_KEY_FLAG_PUT_IV_SPACE;
2138 else
2139 return -EOPNOTSUPP;
8ca151b5
JB		 2140 }
2141
2142 mutex_lock(&mvm->mutex);
2143
2144 switch (cmd) {
2145 case SET_KEY:
5023d966
JB		 2146 if ((vif->type == NL80211_IFTYPE_ADHOC ||
2147 vif->type == NL80211_IFTYPE_AP) && !sta) {
2148 /*
2149 * GTK on AP interface is a TX-only key, return 0;
2150 * on IBSS they're per-station and because we're lazy
2151 * we don't support them for RX, so do the same.
2152 */
6caffd4f
JB		 2153 ret = 0;
2154 key->hw_key_idx = STA_KEY_IDX_INVALID;
2155 break;
2156 }
2157
8ca151b5
JB		 2158 IWL_DEBUG_MAC80211(mvm, "set hwcrypto key\n");
2159 ret = iwl_mvm_set_sta_key(mvm, vif, sta, key, false);
2160 if (ret) {
2161 IWL_WARN(mvm, "set key failed\n");
2162 /*
2163 * can't add key for RX, but we don't need it
2164 * in the device for TX so still return 0
2165 */
6caffd4f 2166 key->hw_key_idx = STA_KEY_IDX_INVALID;
8ca151b5
JB		 2167 ret = 0;
2168 }
2169
2170 break;
2171 case DISABLE_KEY:
6caffd4f
JB		 2172 if (key->hw_key_idx == STA_KEY_IDX_INVALID) {
2173 ret = 0;
2174 break;
2175 }
2176
8ca151b5
JB		 2177 IWL_DEBUG_MAC80211(mvm, "disable hwcrypto key\n");
2178 ret = iwl_mvm_remove_sta_key(mvm, vif, sta, key);
2179 break;
2180 default:
2181 ret = -EINVAL;
2182 }
2183
2184 mutex_unlock(&mvm->mutex);
2185 return ret;
2186}
2187
2188static void iwl_mvm_mac_update_tkip_key(struct ieee80211_hw *hw,
2189 struct ieee80211_vif *vif,
2190 struct ieee80211_key_conf *keyconf,
2191 struct ieee80211_sta *sta,
2192 u32 iv32, u16 *phase1key)
2193{
2194 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2195
5023d966
JB		 2196 if (keyconf->hw_key_idx == STA_KEY_IDX_INVALID)
2197 return;
2198
8ca151b5
JB		 2199 iwl_mvm_update_tkip_key(mvm, vif, keyconf, sta, iv32, phase1key);
2200}
2201
2202
2203static int iwl_mvm_roc(struct ieee80211_hw *hw,
2204 struct ieee80211_vif *vif,
2205 struct ieee80211_channel *channel,
d339d5ca
IP		 2206 int duration,
2207 enum ieee80211_roc_type type)
8ca151b5
JB		 2208{
2209 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
fe0f2de3 2210 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
8ca151b5 2211 struct cfg80211_chan_def chandef;
31d385ae
IP		 2212 struct iwl_mvm_phy_ctxt *phy_ctxt;
2213 int ret, i;
2214
2215 IWL_DEBUG_MAC80211(mvm, "enter (%d, %d, %d)\n", channel->hw_value,
2216 duration, type);
8ca151b5
JB		 2217
2218 if (vif->type != NL80211_IFTYPE_P2P_DEVICE) {
2219 IWL_ERR(mvm, "vif isn't a P2P_DEVICE: %d\n", vif->type);
2220 return -EINVAL;
2221 }
2222
8ca151b5
JB		 2223 mutex_lock(&mvm->mutex);
2224
31d385ae
IP		 2225 for (i = 0; i < NUM_PHY_CTX; i++) {
2226 phy_ctxt = &mvm->phy_ctxts[i];
2227 if (phy_ctxt->ref == 0 || mvmvif->phy_ctxt == phy_ctxt)
2228 continue;
2229
2230 if (phy_ctxt->ref && channel == phy_ctxt->channel) {
2231 /*
2232 * Unbind the P2P_DEVICE from the current PHY context,
2233 * and if the PHY context is not used remove it.
2234 */
2235 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2236 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2237 goto out_unlock;
2238
2239 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2240
2241 /* Bind the P2P_DEVICE to the current PHY Context */
2242 mvmvif->phy_ctxt = phy_ctxt;
2243
2244 ret = iwl_mvm_binding_add_vif(mvm, vif);
2245 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2246 goto out_unlock;
2247
2248 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2249 goto schedule_time_event;
2250 }
2251 }
2252
2253 /* Need to update the PHY context only if the ROC channel changed */
2254 if (channel == mvmvif->phy_ctxt->channel)
2255 goto schedule_time_event;
2256
8ca151b5 2257 cfg80211_chandef_create(&chandef, channel, NL80211_CHAN_NO_HT);
8ca151b5 2258
31d385ae
IP		 2259 /*
2260 * Change the PHY context configuration as it is currently referenced
2261 * only by the P2P Device MAC
2262 */
2263 if (mvmvif->phy_ctxt->ref == 1) {
2264 ret = iwl_mvm_phy_ctxt_changed(mvm, mvmvif->phy_ctxt,
2265 &chandef, 1, 1);
2266 if (ret)
2267 goto out_unlock;
2268 } else {
2269 /*
2270 * The PHY context is shared with other MACs. Need to remove the
2271 * P2P Device from the binding, allocate an new PHY context and
2272 * create a new binding
2273 */
2274 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2275 if (!phy_ctxt) {
2276 ret = -ENOSPC;
2277 goto out_unlock;
2278 }
2279
2280 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &chandef,
2281 1, 1);
2282 if (ret) {
2283 IWL_ERR(mvm, "Failed to change PHY context\n");
2284 goto out_unlock;
2285 }
2286
2287 /* Unbind the P2P_DEVICE from the current PHY context */
2288 ret = iwl_mvm_binding_remove_vif(mvm, vif);
2289 if (WARN(ret, "Failed unbinding P2P_DEVICE\n"))
2290 goto out_unlock;
2291
2292 iwl_mvm_phy_ctxt_unref(mvm, mvmvif->phy_ctxt);
2293
2294 /* Bind the P2P_DEVICE to the new allocated PHY context */
2295 mvmvif->phy_ctxt = phy_ctxt;
2296
2297 ret = iwl_mvm_binding_add_vif(mvm, vif);
2298 if (WARN(ret, "Failed binding P2P_DEVICE\n"))
2299 goto out_unlock;
2300
2301 iwl_mvm_phy_ctxt_ref(mvm, mvmvif->phy_ctxt);
2302 }
2303
2304schedule_time_event:
8ca151b5 2305 /* Schedule the time events */
e635c797 2306 ret = iwl_mvm_start_p2p_roc(mvm, vif, duration, type);
8ca151b5 2307
31d385ae 2308out_unlock:
8ca151b5
JB		 2309 mutex_unlock(&mvm->mutex);
2310 IWL_DEBUG_MAC80211(mvm, "leave\n");
8ca151b5
JB		 2311 return ret;
2312}
2313
2314static int iwl_mvm_cancel_roc(struct ieee80211_hw *hw)
2315{
2316 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2317
2318 IWL_DEBUG_MAC80211(mvm, "enter\n");
2319
2320 mutex_lock(&mvm->mutex);
2321 iwl_mvm_stop_p2p_roc(mvm);
2322 mutex_unlock(&mvm->mutex);
2323
2324 IWL_DEBUG_MAC80211(mvm, "leave\n");
2325 return 0;
2326}
2327
b08c1d97
LC		 2328static int __iwl_mvm_add_chanctx(struct iwl_mvm *mvm,
2329 struct ieee80211_chanctx_conf *ctx)
8ca151b5 2330{
fe0f2de3
IP		 2331 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2332 struct iwl_mvm_phy_ctxt *phy_ctxt;
8ca151b5
JB		 2333 int ret;
2334
b08c1d97
LC		 2335 lockdep_assert_held(&mvm->mutex);
2336
53a9d61e 2337 IWL_DEBUG_MAC80211(mvm, "Add channel context\n");
fe0f2de3 2338
fe0f2de3
IP		 2339 phy_ctxt = iwl_mvm_get_free_phy_ctxt(mvm);
2340 if (!phy_ctxt) {
2341 ret = -ENOSPC;
2342 goto out;
2343 }
8ca151b5 2344
dcbc3e1a 2345 ret = iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
53a9d61e
IP		 2346 ctx->rx_chains_static,
2347 ctx->rx_chains_dynamic);
fe0f2de3
IP		 2348 if (ret) {
2349 IWL_ERR(mvm, "Failed to add PHY context\n");
2350 goto out;
2351 }
2352
53a9d61e 2353 iwl_mvm_phy_ctxt_ref(mvm, phy_ctxt);
fe0f2de3
IP		 2354 *phy_ctxt_id = phy_ctxt->id;
2355out:
b08c1d97
LC		 2356 return ret;
2357}
2358
2359static int iwl_mvm_add_chanctx(struct ieee80211_hw *hw,
2360 struct ieee80211_chanctx_conf *ctx)
2361{
2362 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2363 int ret;
2364
2365 mutex_lock(&mvm->mutex);
2366 ret = __iwl_mvm_add_chanctx(mvm, ctx);
8ca151b5 2367 mutex_unlock(&mvm->mutex);
b08c1d97 2368
8ca151b5
JB		 2369 return ret;
2370}
2371
b08c1d97
LC		 2372static void __iwl_mvm_remove_chanctx(struct iwl_mvm *mvm,
2373 struct ieee80211_chanctx_conf *ctx)
2374{
2375 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2376 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
2377
2378 lockdep_assert_held(&mvm->mutex);
2379
2380 iwl_mvm_phy_ctxt_unref(mvm, phy_ctxt);
2381}
2382
8ca151b5
JB		 2383static void iwl_mvm_remove_chanctx(struct ieee80211_hw *hw,
2384 struct ieee80211_chanctx_conf *ctx)
2385{
2386 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
8ca151b5
JB		 2387
2388 mutex_lock(&mvm->mutex);
b08c1d97 2389 __iwl_mvm_remove_chanctx(mvm, ctx);
8ca151b5
JB		 2390 mutex_unlock(&mvm->mutex);
2391}
2392
2393static void iwl_mvm_change_chanctx(struct ieee80211_hw *hw,
2394 struct ieee80211_chanctx_conf *ctx,
2395 u32 changed)
2396{
2397 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
fe0f2de3
IP		 2398 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2399 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
8ca151b5 2400
31d385ae
IP		 2401 if (WARN_ONCE((phy_ctxt->ref > 1) &&
2402 (changed & ~(IEEE80211_CHANCTX_CHANGE_WIDTH |
2403 IEEE80211_CHANCTX_CHANGE_RX_CHAINS |
2dceedae
AN		 2404 IEEE80211_CHANCTX_CHANGE_RADAR |
2405 IEEE80211_CHANCTX_CHANGE_MIN_WIDTH)),
31d385ae
IP		 2406 "Cannot change PHY. Ref=%d, changed=0x%X\n",
2407 phy_ctxt->ref, changed))
2408 return;
2409
8ca151b5 2410 mutex_lock(&mvm->mutex);
4d66449a 2411 iwl_mvm_bt_coex_vif_change(mvm);
dcbc3e1a 2412 iwl_mvm_phy_ctxt_changed(mvm, phy_ctxt, &ctx->min_def,
8ca151b5
JB		 2413 ctx->rx_chains_static,
2414 ctx->rx_chains_dynamic);
2415 mutex_unlock(&mvm->mutex);
2416}
2417
b08c1d97
LC		 2418static int __iwl_mvm_assign_vif_chanctx(struct iwl_mvm *mvm,
2419 struct ieee80211_vif *vif,
f0c97783
LC		 2420 struct ieee80211_chanctx_conf *ctx,
2421 bool switching_chanctx)
8ca151b5 2422{
fe0f2de3
IP		 2423 u16 *phy_ctxt_id = (u16 *)ctx->drv_priv;
2424 struct iwl_mvm_phy_ctxt *phy_ctxt = &mvm->phy_ctxts[*phy_ctxt_id];
8ca151b5
JB		 2425 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
2426 int ret;
2427
b08c1d97 2428 lockdep_assert_held(&mvm->mutex);
8ca151b5 2429
fe0f2de3 2430 mvmvif->phy_ctxt = phy_ctxt;
8ca151b5
JB		 2431
2432 switch (vif->type) {
2433 case NL80211_IFTYPE_AP:
bd3398e2
AO		 2434 /* Unless it's a CSA flow we have nothing to do here */
2435 if (vif->csa_active) {
2436 mvmvif->ap_ibss_active = true;
2437 break;
2438 }
5023d966 2439 case NL80211_IFTYPE_ADHOC:
8ca151b5
JB		 2440 /*
2441 * The AP binding flow is handled as part of the start_ap flow
5023d966 2442 * (in bss_info_changed), similarly for IBSS.
8ca151b5
JB		 2443 */
2444 ret = 0;
b08c1d97 2445 goto out;
8ca151b5 2446 case NL80211_IFTYPE_STATION:
8ca151b5
JB		 2447 case NL80211_IFTYPE_MONITOR:
2448 break;
2449 default:
2450 ret = -EINVAL;
b08c1d97 2451 goto out;
8ca151b5
JB		 2452 }
2453
2454 ret = iwl_mvm_binding_add_vif(mvm, vif);
2455 if (ret)
b08c1d97 2456 goto out;
8ca151b5
JB		 2457
2458 /*
92d85562
AB		 2459 * Power state must be updated before quotas,
2460 * otherwise fw will complain.
2461 */
999609f1 2462 iwl_mvm_power_update_mac(mvm);
92d85562
AB		 2463
2464 /* Setting the quota at this stage is only required for monitor
8ca151b5
JB		 2465 * interfaces. For the other types, the bss_info changed flow
2466 * will handle quota settings.
2467 */
2468 if (vif->type == NL80211_IFTYPE_MONITOR) {
1e1391ca 2469 mvmvif->monitor_active = true;
0166230c 2470 ret = iwl_mvm_update_quotas(mvm, NULL);
8ca151b5
JB		 2471 if (ret)
2472 goto out_remove_binding;
2473 }
2474
bd3398e2 2475 /* Handle binding during CSA */
f0c97783
LC		 2476 if ((vif->type == NL80211_IFTYPE_AP) ||
2477 (switching_chanctx && (vif->type == NL80211_IFTYPE_STATION))) {
0166230c 2478 iwl_mvm_update_quotas(mvm, NULL);
bca49d9a 2479 iwl_mvm_mac_ctxt_changed(mvm, vif, false);
bd3398e2
AO		 2480 }
2481
b08c1d97 2482 goto out;
8ca151b5 2483
b08c1d97 2484out_remove_binding:
8ca151b5 2485 iwl_mvm_binding_remove_vif(mvm, vif);
999609f1 2486 iwl_mvm_power_update_mac(mvm);
b08c1d97 2487out:
8ca151b5
JB		 2488 if (ret)
2489 mvmvif->phy_ctxt = NULL;
2490 return ret;
2491}
b08c1d97
LC		 2492static int iwl_mvm_assign_vif_chanctx(struct ieee80211_hw *hw,
2493 struct ieee80211_vif *vif,
2494 struct ieee80211_chanctx_conf *ctx)
8ca151b5
JB		 2495{
2496 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
b08c1d97 2497 int ret;
8ca151b5
JB		 2498
2499 mutex_lock(&mvm->mutex);
f0c97783 2500 ret = __iwl_mvm_assign_vif_chanctx(mvm, vif, ctx, false);
b08c1d97
LC		 2501 mutex_unlock(&mvm->mutex);
2502
2503 return ret;
2504}
2505
2506static void __iwl_mvm_unassign_vif_chanctx(struct iwl_mvm *mvm,
2507 struct ieee80211_vif *vif,
f0c97783
LC		 2508 struct ieee80211_chanctx_conf *ctx,
2509 bool switching_chanctx)
b08c1d97
LC		 2510{
2511 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
f0c97783 2512 struct ieee80211_vif *disabled_vif = NULL;
b08c1d97
LC		 2513
2514 lockdep_assert_held(&mvm->mutex);
8ca151b5
JB		 2515
2516 iwl_mvm_remove_time_event(mvm, mvmvif, &mvmvif->time_event_data);
2517
8ca151b5 2518 switch (vif->type) {
5023d966 2519 case NL80211_IFTYPE_ADHOC:
b08c1d97 2520 goto out;
8ca151b5 2521 case NL80211_IFTYPE_MONITOR:
1e1391ca 2522 mvmvif->monitor_active = false;
8ca151b5 2523 break;
bd3398e2
AO		 2524 case NL80211_IFTYPE_AP:
2525 /* This part is triggered only during CSA */
2526 if (!vif->csa_active || !mvmvif->ap_ibss_active)
b08c1d97 2527 goto out;
bd3398e2 2528
003e5236
AO		 2529 /* Set CS bit on all the stations */
2530 iwl_mvm_modify_all_sta_disable_tx(mvm, mvmvif, true);
2531
2532 /* Save blocked iface, the timeout is set on the next beacon */
2533 rcu_assign_pointer(mvm->csa_tx_blocked_vif, vif);
2534
bd3398e2 2535 mvmvif->ap_ibss_active = false;
f0c97783
LC		 2536 break;
2537 case NL80211_IFTYPE_STATION:
2538 if (!switching_chanctx)
2539 break;
2540
2541 disabled_vif = vif;
2542
2543 iwl_mvm_mac_ctxt_changed(mvm, vif, true);
2544 break;
8ca151b5
JB		 2545 default:
2546 break;
2547 }
2548
f0c97783 2549 iwl_mvm_update_quotas(mvm, disabled_vif);
1e1391ca 2550 iwl_mvm_binding_remove_vif(mvm, vif);
1c2abf72 2551
b08c1d97 2552out:
a11e144e 2553 mvmvif->phy_ctxt = NULL;
999609f1 2554 iwl_mvm_power_update_mac(mvm);
b08c1d97
LC		 2555}
2556
2557static void iwl_mvm_unassign_vif_chanctx(struct ieee80211_hw *hw,
2558 struct ieee80211_vif *vif,
2559 struct ieee80211_chanctx_conf *ctx)
2560{
2561 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2562
2563 mutex_lock(&mvm->mutex);
f0c97783 2564 __iwl_mvm_unassign_vif_chanctx(mvm, vif, ctx, false);
8ca151b5
JB		 2565 mutex_unlock(&mvm->mutex);
2566}
2567
b08c1d97
LC		 2568static int iwl_mvm_switch_vif_chanctx(struct ieee80211_hw *hw,
2569 struct ieee80211_vif_chanctx_switch *vifs,
2570 int n_vifs,
2571 enum ieee80211_chanctx_switch_mode mode)
2572{
2573 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2574 int ret;
2575
2576 /* we only support SWAP_CONTEXTS and with a single-vif right now */
2577 if (mode != CHANCTX_SWMODE_SWAP_CONTEXTS || n_vifs > 1)
2578 return -EOPNOTSUPP;
2579
2580 mutex_lock(&mvm->mutex);
f0c97783 2581 __iwl_mvm_unassign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx, true);
b08c1d97
LC		 2582 __iwl_mvm_remove_chanctx(mvm, vifs[0].old_ctx);
2583
2584 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].new_ctx);
2585 if (ret) {
2586 IWL_ERR(mvm, "failed to add new_ctx during channel switch\n");
2587 goto out_reassign;
2588 }
2589
f0c97783
LC		 2590 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].new_ctx,
2591 true);
b08c1d97
LC		 2592 if (ret) {
2593 IWL_ERR(mvm,
2594 "failed to assign new_ctx during channel switch\n");
2595 goto out_remove;
2596 }
2597
2598 goto out;
2599
2600out_remove:
2601 __iwl_mvm_remove_chanctx(mvm, vifs[0].new_ctx);
2602
2603out_reassign:
2604 ret = __iwl_mvm_add_chanctx(mvm, vifs[0].old_ctx);
2605 if (ret) {
2606 IWL_ERR(mvm, "failed to add old_ctx back after failure.\n");
2607 goto out_restart;
2608 }
2609
f0c97783
LC		 2610 ret = __iwl_mvm_assign_vif_chanctx(mvm, vifs[0].vif, vifs[0].old_ctx,
2611 true);
b08c1d97
LC		 2612 if (ret) {
2613 IWL_ERR(mvm, "failed to reassign old_ctx after failure.\n");
2614 goto out_restart;
2615 }
2616
2617 goto out;
2618
2619out_restart:
2620 /* things keep failing, better restart the hw */
2621 iwl_mvm_nic_restart(mvm, false);
2622
2623out:
2624 mutex_unlock(&mvm->mutex);
2625 return ret;
2626}
2627
8ca151b5
JB		 2628static int iwl_mvm_set_tim(struct ieee80211_hw *hw,
2629 struct ieee80211_sta *sta,
2630 bool set)
2631{
2632 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2633 struct iwl_mvm_sta *mvm_sta = (void *)sta->drv_priv;
2634
2635 if (!mvm_sta || !mvm_sta->vif) {
2636 IWL_ERR(mvm, "Station is not associated to a vif\n");
2637 return -EINVAL;
2638 }
2639
2640 return iwl_mvm_mac_ctxt_beacon_changed(mvm, mvm_sta->vif);
2641}
2642
507cadf2
DS		 2643#ifdef CONFIG_NL80211_TESTMODE
2644static const struct nla_policy iwl_mvm_tm_policy[IWL_MVM_TM_ATTR_MAX + 1] = {
2645 [IWL_MVM_TM_ATTR_CMD] = { .type = NLA_U32 },
2646 [IWL_MVM_TM_ATTR_NOA_DURATION] = { .type = NLA_U32 },
f6c6ad42 2647 [IWL_MVM_TM_ATTR_BEACON_FILTER_STATE] = { .type = NLA_U32 },
507cadf2
DS		 2648};
2649
2650static int __iwl_mvm_mac_testmode_cmd(struct iwl_mvm *mvm,
2651 struct ieee80211_vif *vif,
2652 void *data, int len)
2653{
2654 struct nlattr *tb[IWL_MVM_TM_ATTR_MAX + 1];
2655 int err;
2656 u32 noa_duration;
2657
2658 err = nla_parse(tb, IWL_MVM_TM_ATTR_MAX, data, len, iwl_mvm_tm_policy);
2659 if (err)
2660 return err;
2661
2662 if (!tb[IWL_MVM_TM_ATTR_CMD])
2663 return -EINVAL;
2664
2665 switch (nla_get_u32(tb[IWL_MVM_TM_ATTR_CMD])) {
2666 case IWL_MVM_TM_CMD_SET_NOA:
2667 if (!vif || vif->type != NL80211_IFTYPE_AP || !vif->p2p ||
2668 !vif->bss_conf.enable_beacon ||
2669 !tb[IWL_MVM_TM_ATTR_NOA_DURATION])
2670 return -EINVAL;
2671
2672 noa_duration = nla_get_u32(tb[IWL_MVM_TM_ATTR_NOA_DURATION]);
2673 if (noa_duration >= vif->bss_conf.beacon_int)
2674 return -EINVAL;
2675
2676 mvm->noa_duration = noa_duration;
2677 mvm->noa_vif = vif;
2678
0166230c 2679 return iwl_mvm_update_quotas(mvm, NULL);
f6c6ad42
JB		 2680 case IWL_MVM_TM_CMD_SET_BEACON_FILTER:
2681 /* must be associated client vif - ignore authorized */
2682 if (!vif || vif->type != NL80211_IFTYPE_STATION ||
2683 !vif->bss_conf.assoc || !vif->bss_conf.dtim_period ||
2684 !tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE])
2685 return -EINVAL;
2686
2687 if (nla_get_u32(tb[IWL_MVM_TM_ATTR_BEACON_FILTER_STATE]))
a1022927
EG		 2688 return iwl_mvm_enable_beacon_filter(mvm, vif, 0);
2689 return iwl_mvm_disable_beacon_filter(mvm, vif, 0);
507cadf2
DS		 2690 }
2691
2692 return -EOPNOTSUPP;
2693}
2694
2695static int iwl_mvm_mac_testmode_cmd(struct ieee80211_hw *hw,
2696 struct ieee80211_vif *vif,
2697 void *data, int len)
2698{
2699 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2700 int err;
2701
2702 mutex_lock(&mvm->mutex);
2703 err = __iwl_mvm_mac_testmode_cmd(mvm, vif, data, len);
2704 mutex_unlock(&mvm->mutex);
2705
2706 return err;
2707}
2708#endif
2709
bd3398e2
AO		 2710static void iwl_mvm_channel_switch_beacon(struct ieee80211_hw *hw,
2711 struct ieee80211_vif *vif,
2712 struct cfg80211_chan_def *chandef)
2713{
2714 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
664322fa 2715 struct ieee80211_vif *csa_vif;
bd3398e2
AO		 2716
2717 mutex_lock(&mvm->mutex);
664322fa
AO		 2718
2719 csa_vif = rcu_dereference_protected(mvm->csa_vif,
2720 lockdep_is_held(&mvm->mutex));
2721 if (WARN(csa_vif && csa_vif->csa_active,
bd3398e2
AO		 2722 "Another CSA is already in progress"))
2723 goto out_unlock;
2724
2725 IWL_DEBUG_MAC80211(mvm, "CSA started to freq %d\n",
2726 chandef->center_freq1);
664322fa 2727 rcu_assign_pointer(mvm->csa_vif, vif);
bd3398e2
AO		 2728
2729out_unlock:
2730 mutex_unlock(&mvm->mutex);
2731}
2732
c5b0e7c0
EG		 2733static void iwl_mvm_mac_flush(struct ieee80211_hw *hw,
2734 struct ieee80211_vif *vif, u32 queues, bool drop)
2735{
2736 struct iwl_mvm *mvm = IWL_MAC80211_GET_MVM(hw);
2737 struct iwl_mvm_vif *mvmvif;
2738 struct iwl_mvm_sta *mvmsta;
2739
2740 if (!vif || vif->type != NL80211_IFTYPE_STATION)
2741 return;
2742
2743 mutex_lock(&mvm->mutex);
2744 mvmvif = iwl_mvm_vif_from_mac80211(vif);
2745 mvmsta = iwl_mvm_sta_from_staid_protected(mvm, mvmvif->ap_sta_id);
2746
2747 if (WARN_ON_ONCE(!mvmsta))
2748 goto done;
2749
2750 if (drop) {
2751 if (iwl_mvm_flush_tx_path(mvm, mvmsta->tfd_queue_msk, true))
2752 IWL_ERR(mvm, "flush request fail\n");
2753 } else {
2754 iwl_trans_wait_tx_queue_empty(mvm->trans,
2755 mvmsta->tfd_queue_msk);
2756 }
2757done:
2758 mutex_unlock(&mvm->mutex);
2759}
2760
e5209263 2761const struct ieee80211_ops iwl_mvm_hw_ops = {
8ca151b5
JB		 2762 .tx = iwl_mvm_mac_tx,
2763 .ampdu_action = iwl_mvm_mac_ampdu_action,
2764 .start = iwl_mvm_mac_start,
2765 .restart_complete = iwl_mvm_mac_restart_complete,
2766 .stop = iwl_mvm_mac_stop,
2767 .add_interface = iwl_mvm_mac_add_interface,
2768 .remove_interface = iwl_mvm_mac_remove_interface,
2769 .config = iwl_mvm_mac_config,
e59647ea 2770 .prepare_multicast = iwl_mvm_prepare_multicast,
8ca151b5
JB		 2771 .configure_filter = iwl_mvm_configure_filter,
2772 .bss_info_changed = iwl_mvm_bss_info_changed,
2773 .hw_scan = iwl_mvm_mac_hw_scan,
2774 .cancel_hw_scan = iwl_mvm_mac_cancel_hw_scan,
1ddbbb0c 2775 .sta_pre_rcu_remove = iwl_mvm_sta_pre_rcu_remove,
8ca151b5
JB		 2776 .sta_state = iwl_mvm_mac_sta_state,
2777 .sta_notify = iwl_mvm_mac_sta_notify,
2778 .allow_buffered_frames = iwl_mvm_mac_allow_buffered_frames,
3e56eadf 2779 .release_buffered_frames = iwl_mvm_mac_release_buffered_frames,
8ca151b5 2780 .set_rts_threshold = iwl_mvm_mac_set_rts_threshold,
1f3b0ff8 2781 .sta_rc_update = iwl_mvm_sta_rc_update,
8ca151b5
JB		 2782 .conf_tx = iwl_mvm_mac_conf_tx,
2783 .mgd_prepare_tx = iwl_mvm_mac_mgd_prepare_tx,
c5b0e7c0 2784 .flush = iwl_mvm_mac_flush,
35a000b7
DS		 2785 .sched_scan_start = iwl_mvm_mac_sched_scan_start,
2786 .sched_scan_stop = iwl_mvm_mac_sched_scan_stop,
8ca151b5
JB		 2787 .set_key = iwl_mvm_mac_set_key,
2788 .update_tkip_key = iwl_mvm_mac_update_tkip_key,
2789 .remain_on_channel = iwl_mvm_roc,
2790 .cancel_remain_on_channel = iwl_mvm_cancel_roc,
8ca151b5
JB		 2791 .add_chanctx = iwl_mvm_add_chanctx,
2792 .remove_chanctx = iwl_mvm_remove_chanctx,
2793 .change_chanctx = iwl_mvm_change_chanctx,
2794 .assign_vif_chanctx = iwl_mvm_assign_vif_chanctx,
2795 .unassign_vif_chanctx = iwl_mvm_unassign_vif_chanctx,
b08c1d97 2796 .switch_vif_chanctx = iwl_mvm_switch_vif_chanctx,
8ca151b5 2797
5023d966
JB		 2798 .start_ap = iwl_mvm_start_ap_ibss,
2799 .stop_ap = iwl_mvm_stop_ap_ibss,
2800 .join_ibss = iwl_mvm_start_ap_ibss,
2801 .leave_ibss = iwl_mvm_stop_ap_ibss,
8ca151b5
JB		 2802
2803 .set_tim = iwl_mvm_set_tim,
2804
bd3398e2
AO		 2805 .channel_switch_beacon = iwl_mvm_channel_switch_beacon,
2806
507cadf2
DS		 2807 CFG80211_TESTMODE_CMD(iwl_mvm_mac_testmode_cmd)
2808
8ca151b5
JB		 2809#ifdef CONFIG_PM_SLEEP
2810 /* look at d3.c */
2811 .suspend = iwl_mvm_suspend,
2812 .resume = iwl_mvm_resume,
2813 .set_wakeup = iwl_mvm_set_wakeup,
2814 .set_rekey_data = iwl_mvm_set_rekey_data,
2815#if IS_ENABLED(CONFIG_IPV6)
2816 .ipv6_addr_change = iwl_mvm_ipv6_addr_change,
2817#endif
2818 .set_default_unicast_key = iwl_mvm_set_default_unicast_key,
2819#endif
2820};
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